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API TR 7CR

Original price was: $75.00.Current price is: $45.00.

Cold Working Thread Roots with CNC Lathes for Rotary Shouldered Connections, First Edition

Published by Publication Date Number of Pages
API 01/01/2020 49

API TR 7CR – Cold Working Thread Roots with CNC Lathes for Rotary Shouldered Connections, First Edition

This technical report describes procedures for cold root rolling the thread roots on API 7-2 thread sizes using CNC Lathes (CW/CNC). Cold working can be applied by a couple methods: (1) cold rolling under pressure with a roller shaped like the thread form, or (2) shot peening. Both methods achieve acceptable results, but machine thread root rolling is more controllable.

It is not the intent of this technical report to explain the benefits of thread root rolling, but the manufacturing process and quality control requirements. This technical report will address the best practices (or recommended practices) to cold root roll API 7-2 threads and identification marking.

This technical report will not address cold root rolling using manual lathes (CW/Manual)—a similar process but with different tools used for the pin and box. However, the tools described in this technical report can also be used on manual lathes. The steps to position the CW roll into the thread and the paths the tools move can vary between CNC machines controls.

Product Details

Edition:
1st
Published:
01/01/2020
Number of Pages:
49
File Size:
1 file , 2 MB
Product Code(s):
G7CR01, G7CR01
Note:
This product is unavailable in Russia, Cuba, Syria, North Korea, Ukraine, Belarus, Iran

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API TR 7CR
Original price was: $75.00.Current price is: $45.00.