ch-20 23 material data

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1. SCOPE: Hobel Material Hb50E71-1 identifies a precision investment cast as per ASTM-A957 , to grade ACI CH-20 stainless steel, dual pipe exhaust manifold casting as follows:

Hb50E71-1 – Air Melt, As Cast

1.1 CAD MODEL : Refer 3D Model for Throat , radius, surface profile dimensions.

2. WAX INJECTION PRACTICE: Detailed steps for the manufacture of wax patterns are not specified.However, once the practice has been established and agreed to by the manufacturer and HobelEngineering, no change or variation in the practice shall occur without prior written approval by HobelEngineering

3. CERAMIC MOLDING PRACTICE:Detailed steps for the ceramic molding practice are not specified. However, the ceramic mold shall consistof primary, secondary and final (i.e. “stucco”)layers built up from ceramic slurries. In addition, once thepractice has been established and agreed to by the manufacturer and HOBEL Engineering, no change orvariation in the practice shall occur without prior written Approval by HOBEL Engineering.

4. DEWAXING AND CERAMIC FIRING PRACTICE: Detailed steps for the dewaxing and ceramic firingpractice are not specified. Dewaxing may be performed by autoclave exposure, direct burn-out or bychemical means. Ceramic firing may be integral with the dew axing operation or may be performed as anadditional step after dewaxing. However once the dewaxing and ceramic firing practice has beenestablished and agreed to by the manufacturer and HOBEL Engineering, no change or variation in thepractice shall occur without prior written approval by HOBEL Engineering

5. MELTING AND POURING PRACTICE: Detailed steps for the master heat or remelt heat meltingpractice are not specified. However, control of the liquid metal temperature, just prior to pouring, shall beexercised within a ± 25 o F variation. In addition, the liquid metal shall be introduced into the mold asquickly as possible with a minimum amount of time spent in transferring the liquid metal from the furnaceto the pouring ladle and from the pouring ladle to the mold. In addition, once the practice has beenestablished and agreed to by the manufacturer and HOBEL Engineering, no change or variation in thepractice shall occur without prior written approval by HOBEL Engineering.

6. CASTING: A manifold casting shall be poured in air form a portion of the master heat of from a remeltheat. The manifold casting shall be a precision investment casting.

6.1 MANUFACTURE: A satisfactory system of foundry control shall be established, including a definition of the minimumsolidification time in the mold prior to shake-out. These conditions are also subject to approval by HOBELEngineering.

6.2 CASTING SHAKE-OUT AND CLEANING:Casting shake-out shall be accomplished by Appropriate mechanical means such that the casting shall notbe damaged by the shake-out method used. Final cleaning of the casting shall be performed by gritblasting using irregularly-shaped or cut wire stainless steel metal grit or aluminium oxide grit.

SPECIFICATION & PROPERTIESFOR

EXHAUST MAIN SECTIONCASTINGS

No : Hb50E71-1Rev No : 00Date : 06.09.2014Page : 1 of 15

Prepared By : Approved By :


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6.3 REFER METHODS:

Chemical composition…………………………………………… ASTM-E30Radiographic inspection………………………………………… ASTM-E71, ASTM-E192Liquid penetrant inspection……………………………………. ASTM-E165Brinell hardness …………………………………………………… ASTM-E10

7. CHEMICAL COMPOSITION : (Master and Remelt Heat)

Carbon, % max ………………………………………………………… 0.20Manganese, % max……………………………………………………. 1.50Silicon, % max…………………………………………………………… 2.00Phosphorus, % max……………………………………………………. 0.040Sulfur, % max……………………………………………………………. 0.040Nickel, %…………………………………………………………………… 12.0 – 15.0Chromium, % ……………………………………………………………. 22.0 – 26.0Molybdenum, % max………………………………………………….. 0.50Copper, % max…………………………………………………………… 0.35Nitrogen, % max…………………………………………………………. 0.15

Any other metallic element, % max………………………………. 0.20Iron …………………………………………………………………………... Balance

7.1 The master heat analysis made by the manufacturer to determine the percentagesof elements required by this specification shall conform to the requirements listed aboveand shall be reported to the purchaser in a certificate of test specified in 13.1.

7.2 An analysis may be made on a sample casting by the purchaser and the chemicalcomposition thus determined shall conform to the requirements of this specification.

7.3 Each remelt heat used from the master heat must conform to the composition listedabove.

7.4 Ferrite Content: The ferrite content of the casting will be governed by the specific chemicalcomposition of the casting. For the chemistry ranges specified in 2., the attached Schaeffler Diagram(Figure I) shows the bounds of the calculated ferrite contents. For anticipated performance, amaximum ferrite content of 20% anywhere in the casting is specified.

7.4.1 Ferrite content shall be determined through the use of a calibrated Severn Gage.

8 MECHANICAL PROPERTIES :It is the intent of this specification that the castings themselves have the specified tensile properties. Inlieu of castings, separately cast and machined (or ground)tensile test specimens may be tested forproduction release purpose provided that the correlation of properties of the castings and theseparately cast and machined (or ground)tensile test specimens is agreed to by both the manufacturer andHOBEL Egineering. Mechanical properties & heat treatment are as per std .(ASTM A743 ).

The number of samples for mechanical property tests shall be determined by HOBEL Quality Control






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8.1 Test Specimens : Unless otherwise specified, tensile test specimens shall be separately cast to represent each master heat oreach re-melt heat and, when requested, shall be supplied with the castings. The specimens shall be ofstandard proportions with an approximate 0.25” diameter (after machining or grinding) and a 1” reducedgauge length or an approximate 0.50” diameter (after machining or grinding) and a 2” reduced gagelength. Separately cast tensile specimens shall be cast in molds made of the same refractory and heatedto the same temperature as the molds for castings, and under the same conditions as the castings, andshall be cooled at approximately the same rate as the castings. As separately cast tensile specimen mayalso be cast as an attached tensile test specimen to an individual manifold casting.

8.2 The following mechanical properties are required in separately cast and machined tensile test specimensthat represent each heat of castings:

Tensile Strength, psi, min ………………………………………….. 70,000 Yield Strength, psi @ 0.2% offset, min ……………………….. 30,000Elongation, % min……………………………………………………… 30Reduction of Area, % min…………………………………………… 30Rockwell hardness, R B , max……………………………………….. 90

Inspection of Castings:

The inspection methods have to be developed to inspect castings for defects that may occur during theirproduction. Such inspections may be in process inspections or finished product inspections.In process inspections are carried out before a lot of castings have been completed to detect any flawsthat may have occurred in the process so that corrective measures can be taken to remove the defect inthe remaining units.

Finished product inspections are carried out after the castings have all been completed to make surethat the product meets the requirements specified by the customer.

Defective castings may be salvaged or completely rejected to be re-melted for their material contentdepending upon the nature and extent of defect. The inspection methods may also be divided intodestructive or non-destructive categories depending upon the magnitude of damage done to the castingduring inspection.

Destructive methods generally relate to sawing or breaking off of parts of the castings. It consists ofinspecting the surface of the casting with naked eye or sometimes with a magnifying glass or microscope.It can only indicate surface defects such as blow holes, fusion, swells, external cracks, and mismatch.

Almost all castings are subjected to certain degree of visual inspection

Dimensional Inspection:

Dimensional inspection is carried out to make sure that the castings produced have the required overalldimensions including allowances for machining. It may sometimes be necessary to break a part of thecasting to take measurements of inside dimensions.






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Sound Test:

This is a rough test to indicate a flaw or discontinuity in a casting. The casting is suspended from a suitablesupport free of all obstructions and tapped at various places on its surface with a small hammer. Anychange in the tone produced indicates the existence of a flaw. The method cannot indicate the exactlocation and extent of the discontinuity.

9. QUALITY : Each part drawing shall identify the quality regions in the castings needed to determine theextent of both surface and internal soundness inspections used for part acceptance. The quality zones usedhere are as similar to the grades identified in AMS 2175, Castings, Classification and Inspection of. Here asfollows are the grades utilized by Hobel:

NOTE: Leak testing, dye penetrant test, Radiography testing to be carried out aftermachining .

9.1. Radiography Examination:

Radiography method to be carried out as per std i,e ASTM E-192 “Standard reference radiographs ofinvestment steel casting of aerospace application “Castings are to be radiographed for the purpose of evaluating the casting Quality during the development

process and subsequent monitoring of the production process. The extent of radiographic inspection shallbe agreed upon between the purchaser and the supplier of the manifold casting. The quality of theradiographs shall be governed by satisfactorily showing the presence of a 2% penetrameter (i.e. a 2Thole) in any radiograph.

9.1.1Radiographic Evaluation Criteria: Grade B (Refer Photo -1) - limited regions within the casting where secondary welding operationsrequire very tight surface and internal soundness.

Grade C (Refer Photo -1) - regions within a casting where stresses require moderately good overallsurface and internal soundness.

Grade D (Refer Photo -1) - regions of lower stress that are more easily produced, and primarilynon-critical locations within the casting. In the case of part drawing/Photo -1 w/o identification ofcritical regions then this is the default quality grade.






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Each Casting shall be inspected with an inspection sequence per AMS2175.Definition of Foundry terms per AMS 2175.

The quality issues and inspections which are important to the manifold casting include radiography,fluorescent penetrant inspection, pressure test and visual inspection criteria. Dimensionalrequirements shall be found on the latest revision of the manifold casting drawing. The intendedpurpose of these criteria is to insure that the manifold casting is free of injurious defects and issuitable for the intended application.

PHOTO - 1






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Maximum permissible Radiographic Severity levels for discontinuities in investment steelcastings in accordance with ASTM E- 192 (5)

Discontinuity

Location & Grade

Zone W – Grade B Zone X & Y – Grade C Other Areas - Grade D

3/8 Inch 3/8 Inch 3/8 Inch

Gas Holes 3 5 7

Shrinkage, Cavity None None 2

Shrinkage, Sponge 1 4 6

Shrinkage, Dendritic 2 4 6

Shrinkage, Filamentary None None None

Foreign Material,Less Dense 3 6 7

Foreign Material, More Dense 3 6 7

Cold Shut, Hot Tear, OR Coldcrack

--------------------------------None-------------------------------------

Misrun --------------------------------None-------------------------------------

Core Shift or Mold Ridge --------------------Not to Exceed Drawing Tolerance-----------------

Mold Buckle,Positive or Negative --------------------Not to Exceed Drawing Tolerance-----------------

Excess Metal in Cracked Core --------------------Not to Exceed Drawing Tolerance-----------------

Surface Irregularities --------------------Not to Exceed Drawing Tolerance-----------------

Notes :

1. Excluding the single largest gas hole.2. Excluding the crack – like discontinuities emitting from the gas holes.3. Excluding the bottom half of the standard reference radiograph.4. Use reference radiographic plates for foreign material less dense.






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9.1.2. Note : Initial proto type sample to be cut at different locations as mentioned below & tobe reviewed inline with CAD MODEL before approving the sample lot.

Sectional Views of Casting






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9.2. Liquid penetrant test : Liquid penetrant test as per std ASTM E-165” Standard practices for liquid penetrant”

Fluorescent Penetrant Inspection:Manifold castings shall be subjected to fluorescent penetrant inspection in accordance with ASTM MethodE-165 and the processes defined in 9.2.1 and 9.2.2. If a process other than those specified is to be used,written approval shall be obtained from HOBEL Engineering prior to the use of the process. Acceptancecriteria shall be as noted under “Liquid Penetrant Inspection Criteria” on the latest revision of the manifoldcasting drawing.

9.2.1Fluorescent Penetrant Process # 1: The following process will be followed for Fluorescent penetrant inspection :

As Cast or Machined Surfaces Exposure TimePenetrant ZL-2A 30 minutes min.Emulsifier ZE-3 OR ZE – 3A 3 Minutes max.Developer ZP-4, ZP-4A or ZP-13 Read indications 5 to 20

minutes after developing

Note: Penetrant, emulsifier and developer are products of the Magnaflux Corp.

9.2.2 Fluorescent Penetrant Process # 2:

As Cast or Machined Surfaces Exposure Time

Penetrant FP92B 5 Seconds min.

Developer D72A Dry Powder Dust all surfaces.Read indications immediatelyafter blowing powder off for15 Sec. Min.

Note: Penetrant and developer are products of the Met-L-Check Corp.

Steps of Liquid Penetrant Testing The exact procedure for liquid penetrant testing can vary from case to case depending on several factors such asthe penetrant system being used, the size and material of the component being inspected, the type ofdiscontinuities being expected in the component and the condition and environment under which the inspection isperformed. However, the general steps can be summarized as follows:






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a. Surface Preparation :One of the most critical steps of a liquid penetrant testing is the surface preparation. The surface must be freeof oil, grease, water, or other contaminants that may prevent penetrant from entering flaws. The sample mayalso require etching if mechanical operations such as machining, sanding, or grit blasting have beenperformed. These and other mechanical operations can smear metal over the flaw opening and prevent thepenetrant from entering.

b. Penetrant Application :Once the surface has been thoroughly cleaned and dried, the penetrant material is applied by spraying,brushing, or immersing the part in a penetrant bath.

c. Penetrant Dwell :The penetrant is left on the surface for a sufficient time to allow as much penetrant as possible to be drawn

from or to seep into a defect. Penetrant dwell time is the total time that the penetrant is in contact with thepart surface. Dwell times are usually recommended by the penetrant producers or required by the specificationbeing followed. The times vary depending on the application, penetrant materials used, the material, the formof the material being inspected, and the type of discontinuity being inspected for. Minimum dwell timestypically range from five to 60 minutes. Generally, there is no harm in using a longer penetrant dwell time aslong as the penetrant is not allowed to dry. The ideal dwell time is often determined by experimentation andmay be very specific to a particular application.

d. Excess Penetrant Removal :This is the most delicate part of the inspection procedure because the excess penetrant must be removed fromthe surface of the sample while removing as little penetrant as possible from defects. Depending on thepenetrant system used, this step may involve cleaning with a solvent, direct rinsing with water, or first treatingthe part with an emulsifier and then rinsing with water.

e. Developer Application : A thin layer of developer is then applied to the sample to draw penetrant trapped in flaws back to the surfacewhere it will be visible. Developers come in a variety of forms that may be applied by dusting (dry powders),dipping, or spraying (wet developers).

f. Indication Development :The developer is allowed to stand on the part surface for a period of time sufficient to permit the extraction ofthe trapped penetrant out of any surface flaws. This development time is usually a minimum of 10minutes.Significantly longer times may be necessary for tight cracks.

g. Inspection: Inspection is then performed under appropriate lighting to detect indications from any flaws which may bepresent.

h. Clean Surface :

The final step in the process is to thoroughly clean the part surface to remove the developer from the partsthat were found to be acceptable.






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9.3 Pressure Test: Each casting shall be subjected to a pressure test to verify the integrityof the casting. Detailed steps for the pressure test are not specified. However, once the test procedurehas been established and agreed to by the Manufacturer and HOBEL Engineering, no change or variationin the test procedures shall occur without prior written approval by HOBEL Engineering.

This test is carried out on castings required to be leak proof. All openings of the castings are closedand a gas under pressure is introduced in it. Castings having porosity leak under this pressure.

The leakage may be detected by submerging the casting in a water tank or using a soap film ifthe pressure is applied by compressed air.

If a liquid is used for applying pressure the leakage can be found by visual inspection

9.3.1 Pressure Test Acceptance Criteria: For the agreed upon pressure test conditionsImposed, each casting shall display no leakage during the pressure test. When a leak is detected, thecasting may be reworked according to 9.5. After the rework operation, the casting must be retested andsuccessfully pass the pressure test.




LIQUID PENETRANT EXAMINATION REPORT

CASTING NUMBERS CASTING BATCH NUMBER :

LOCATION :-

Report of Examination Performed

Examination method

Acceptance

Cleaner batch Number: Brand NamePenetrant batch Number: Brand Name

Developer batch Number: Brand Name

Penetrant batch dwell timeminutes:

Item Description / Part Number

RESULTS:(Examiner Name) (Certification level) Date



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Steps of pressure testing (leak testing):

Pressure test to be carried for all pieces (100% testing to be carried out) Ensure that the test pressure gauge has current calibration sticker. Ensure the clamps are properly tightened. Install the calibrated test gauge so it is visible at all time. Increasing pressure slowly & gradually until not more than 7bars of the test pressure is achieved. Hold the pressure (i.e.7 bars) for a 2minutes to permit. Check the pressure gauge periodically for the indication of leakage. Apply a soap solution thro out the component. Any leakage in the casting found, perform the following steps for repairing the casting as per standard &

according to 9.5. After casting reworked according to standard 9.5, the casting must be retested with same procedure as said

above. Ensure the test is carried on castings required to be 100% leak proof. Inspection report to be summited along with the leak tested / accepted casting.

NOTE : In case any casting found leakages at the time of welding (assy) or at user end (fitmenttime) and testing time. We consider the casting as rejection.

LEAK TESTING REPORT

Name ofcomponent:

Drawing No& Rev No:

Date:

Customer

name :

Quantity

Inspected

Date of mfrs

Casting heatNo/batchNo:

Inspection reportNo

SLNO

CASTINGNO

PRESSURE@5BAR

Numberof leak ascast

Number ofleak aftermachining

Repairdone/accepted

REMARKS

1

2

3

4

5QTYACCEPTED

QTY REJECTED

NOTE :

INSPECTED BY: APPROVED BY:






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9.4 Visual Inspection : Surface roughness refer std ASTM A997-08 , LEVEL III or better. Each casting shallbe subjected to a visual inspection. This inspection is important in sorting out castings which are clearlydefective, repairable or acceptable. Casting defects are mentioned Below.

1. Casting bend & waviness& ovality are not acceptable.

2. Blow Holes ,Pin holes, deep grinding marks on casting are not allowed.

3 . Blow Holes after machining on casting are not allowed.

4. Casting surface should be 100% free from pitting marks, Rough surface , black patches & scaling

5. Casting with cracks & dent marks , humps & irregular shapes are not acceptable.

9.4.1 Definition of Defects:

9.4.1.1 Hot Tears in Small Flanges: These are linear, circumferentially-oriented defects lying on the inboardside of the small flanges. These defects render the casting reject able.

9.4.1.2 Shrinkage in Small Flanges: These are linear, axially-oriented defects lying on theinboard side of the small flanges. These defects render the casting reject able.

9.4.1.3 Body Sponge: This defect represents an area of interconnected or closely spacedshrinkage or porosity in the main body of the casting. If a casting with this conditionpasses the pressure test of 9.3 and 9.3.1, the casting is acceptable. If the casting with this condition isreworked according to 9.5 and subsequently passes the pressure test of 9.3 and 9.3.1, the casting isacceptable. For all other conditions, a casting with this condition is reject able.

9.4.1.4 Body Cold Shuts: These are linear defects which are solidification discontinuities that are visible at boththe inside and outside surfaces of the main body. Even though a casting with this defect may pass thepressure test requirements of 9.3 and 9.3.1, the defect may open up during service exposure. Therefore,a casting with this defect is reject able.

9.4.1.5 Body Dimples: These are irregularly – shaped point defects which result from shrinkage in the main bodywall. The defect appears as a negative at both the inside and outside surfaces of the main body. Acasting with this condition, which passes the pressure test requirements of 9.3 and 9.3.1, is acceptablewithout rework. If the casting fails the pressure test because of this type of defect, the casting may be

reworked according to 9.5.1 and again pressure tested according to 9.3 and 9.3.1 to determine whetherthe casting is acceptable or reject able.






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9.4.1.6 Linear Discontinuities: These are main body surface defects whose individual length must not exceed0.12 inches. If the defect length lies between 0.12 inches and 2.0inches, the casting may be repairedaccording to 9.5.1. The casting shall subsequently pass the pressure test requirements of 9.3 and 9.3.1.

As indicated in 9.4.1.1 and 9.4.1.2 no linear defects are permitted in the small flanges.

9.4.1.7 Positive Metal: These are surface defects which result from positive wax defects,ceramic shell cracking and the like. No positive surface indications greater than 0.20” are permitted aftergrinding and blending. Any grinding of this type of defect which results in the failure of the casting topass the requirements of 9.3 and 9.3.1 shall subject the casting to the rework procedure of 9.5. Thecasting shall subsequently pass the pressure test requirements of 9.3 and 9.3.1.

9.5 Rework Criteria: These procedures are intended to permit the upgrading of somedefective castings to an acceptable status.

9.5.1 Main Body Welding: The main body of the casting is defined as all areas of the casting With theexception of the two small flanges and the main body area within 0.25 inches of the small flanges.Repair welding is permitted for through-wall defects smaller than 0.25” in diameter in this area.Linear indications not exceeding 2.0 inches in length may be repair welded if the wall thicknessafter grinding but prior to welding is 0.090 inches or greater. A TIG welding process shall be usedin conjunction with AWS 309 stainless steel weld wire.

9.5.2 Small Flange Welding: Repair welding in this area is not permissible without specific Repairauthorization processed through a deviation request of 16.2.

9.5.3 Hand Grinding and Grit Blasting: Hand grinding of all surfaces of the casting isPermitted only to the extent that the primary dimension of the surrounding material shall not be reduced.Final finishing of reworked castings shall be performed by grit blasting according to 6.2.

9.5.4 Retesting: Any casting which has been reworked shall pass all the fluorescent penetrantRequirements of 9.2and 9.2.1, all of the pressure test requirements of 9.3 and 9.3.1 and all of thevisual requirements of 9.4.

9.6 Acceptance Criteria: As tabulated in 9. Listed herein, and on the applicable drawing.

10. REFER METHODS:

Chemical composition…………………………………………… ASTM-E30Radiographic inspection………………………………………… ASTM-E71, ASTM-E192

Liquid penetrant inspection……………………………………. ASTM-E165Brinell hardness …………………………………………………… ASTM-E10

11. TOLERANCES: Dimensions and tolerances shall be as specified on the latest revisionof the manifold casting drawing accompanying the purchase order.






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12. IDENTIFICATION: Each casting shall be identified by the last three digits of the latest revision of themanifold casting drawing and a part designation, a heat code designation and a supplier logo. The heatcode shall be cross-referenced with the corresponding certificate of test required in 13.1.

13. REPORTS:

13.1 Certificate of Test: The casting supplier shall certify all chemical and mechanical tests Tests and ferritelevels specified herein. A certificate of test for each shipment of castings supplied to this specification shallbe submitted by the supplier and mailed to the purchaser with or preceding the shipment of the material.This certificate shall give the numerical results of the tests and show that results are in accordance withthe requirements of this specification. In addition the certificate of test must contain the followinginformation :

13.1.1 Heat Code Identification

13.1.2 Pouring Date

13.1.3 Applicable Drawing Number

13.1.4 Certification Test Date

13.1.5 Quantity Shipped

13.1.6 Requisition Number

13.1.7 Specification Number and Revision Number

14. PACKING AND MARKING: Finished castings shall be individually boxed for shipment. A larger boxholding a quantity of individually boxed castings may be used for shipment Purposes. The individualcasting boxes should be identified with the appropriate Drawing number.

15. APPROVAL:

15.1 To assure uniformity of quality, sample castings from new or reworked patterns or molds Shall beapproved by the purchaser, unless such approval is waived by HOBEL Engineering.

15.2 Supplier shall use the same foundry practices for production castings and test coupons as for approvedsample castings. If it becomes necessary to make any change, supplier shall notify the purchaser prior to

the first shipment of castings incorporating any such change.

16. REJECTIONS:

16.1 Manifold castings not confirming to this specification or to authorized modifications will be subject torejection.

16.2 An approved deviation request on Form TSBD-2795-A will be considered an authorized modification asreferred to in 16.1.






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NOTE : TEST RECORD FOR CASTING(Chemical & Mechanical test),LEAK TESTING & RADIOGRAPHY.

Test record is required for each casting ,indicates

Casting inspection report : 100% for all casting. Test specimen (Samples) : 2 specimen of each heat No. Chemical & mechanical test report : 3 Nos each casting ,chemical & mechanical reports. Radio graphy report : 3 Nos of casting ,reports radiography. Leak testing report : 100% for all casting. Dye penetrant test report : minimum for 5 casting of each batch.

The above mentioned records should be maintained at your end for both main section & end section ,So that in case any defects are found in the casting during welding & other process or any defects areFound at user end, the above records are used for verification & future improvement purpose.

NOTE: the original reports like inspection, chemical, mechanical, leak testing & radiography to beenclosed along with the each supplies of castings.

In case any defects are detected at the time of inspection & out of our specified standard at your end,avoid to send those component.

At our end we to inspect and test the sample & component randomly, if any defects & mismatching toour standard, we consider the whole lot as rejection.

CASTING REPORTName of

component :Drawing No& Rev No:

Date:

Customer name : QuantityInspected Date ofmfrs

Castingheat No. /batch No:

Inspectionreport No

SLNO

CASTINGNO

Visualinspection

PressuretestReportNo

liquid -penetranttest reportNo

Radiographyreport No

Chemicaltest reportNo

Mechanicaltest reportNo

hardnesstest report

REMARKS

12

34

5

QTY ACCEPTED QTY REJECTED

NOTE :

INSPECTED BY: APPROVED BY:





ch-20 23 material data

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