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our Spring Rate tester readings & suppliers readings are not matching. hence we asked third party readings through NABL accredited lab. these readings also are not matching with earier both the readings. all the tester have been calibrated. in this case how to go ahead? are master springs...

how to measure number of active coils in compression spring? will someone explain

Dear Friends I am attaching a drawing, which has BLACK trangles in circle. some are 1/8 (SN 1 & 2), some are 1/4 ((SN 3 & 4), ), some 1/8 with a line in it ((SN 5 & 6). Any body can explain what is the meaning of this symbol. Is it location pin symbol? Avinash Puri

Dear Friends I am attaching a drawing, which has BLACK trangles in circle. some are 1/8 (SN 1 & 2), some are 1/4 ((SN 3 & 4), ), some 1/8 with a line in it ((SN 5 & 6). Any body can explain what is the meaning of this symbol. Is it location pin symbol? Avinash Puri

Dear Members I want to know standard for 1. Inspecting quality of corrugated packing box, edge boards 2. Pallet - wooden, plastic made 3. Testing standard 4. Consumable standard/ inspection method: strapping/wrapping material 5. Storing of corrugated material 6. Guidelines for manufacturer’s...

I will like to add "The Idea Book Improvement Through TEI"- by Japan Human Relations Association. Cambridge: Productivity Press, 1988. Kedar http://www.amazon.com/Idea-Book-Improvement-Involvement-Management/dp/0915299224

Dear Members 1. do you know the procedure for how to conduct hardness testing on spring pin? 2. my friend says that hardness testing is to be done on moulded spring pin sample, where as some says that it should be done on flat sheet blank hardened with spring pin 3. does any standard specifies...

Members please inform me about: 1. Equivalent for AISI 1070 & AISI 1095 in En series 2. some websites specify chromium in AISI 1070 & AISI 1095 e.g. like "http ://www.steelstrip.co.uk/springsteel/pages/Qualities2.htm" What is the reason? 3. Is spring steel and carbon steel similar OR...

please let me know "mild steel (Indian)" equivalent gradein En. thank you kkg123

can LME phenomenon be avoided? kedarg6500

dear friends we have a bend test for spring dowel pin. it says that spring dowel pin when bend up to 90 deg along split side should not crack. but i could not locate any reference standard to this test. hardness is 46-53 Rc and OD is .083-.089"(INCH) can any one help to locate any reference...

dear Kenat i am unable to find "thread1103-227624: Spring Inspection Method" will you please elaborate the method discribed Kedarg6500

HRSP long form is hot rolled steel plate

3 mm HRSP sheet has exctruded hole in which coppeer tube is brazed with 25 % silver brazing rod.cracking occurring while brazing. can some one throw light on liquid metal embrittlement.how to avoid it the extuded hole cracks up after brazing. i heard about thumb rule to give radius on die punch...

3 mm HRSP sheet has exctruded hole in which coppeer tube is brazed with 25 % silver brazing rod.cracking occurring while brazing. can some one throw light on liquid metal embrittlement.how to avoid it

ATTACHEMENT LINKhttp://files.engineering.com/getfile.aspx?folder=0a8b1b19-8876-4924-b23a-615aa49f7d66&file=DSC02324.JPG

I AM ATTACHING THE PHOTO

we are getting cracks at the bottom of the extruded hole. i heard that the die punch radius is dependent on thickness of sheet.

we do extruded hole operation. the extuded hole cracks up after brazing. i heard about thumb rule to give radius on die punch. will any body share information help please kkg123

Thanks to all & specially TVP/Philrock,as they have given me direct answer in right direction. request a help can anybody atleast give reference of design data handbook like machinary handbook etc. or some paper if standard is not known or non available.