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Thick-walled stainless steel tube processing technology

Rolling tools, equipment and materials have been developed in such a way that it is possible to use a very practical method of rolling to roll precision threads on thick-walled stainless steel pipe parts. Several methods are used, such as single roll or impact roll Double roll straddle or tangential roll, and machining from one end of the part, similar to thread die operation. These operations are done on lathes and automation equipment.


The threaded public rolling process can be accomplished using a variety of thread rolling forming principles, such as cylindrical dies and reciprocating dies with two or three dies. Some parts must be rolled up against the shoulders of the long threads, in which case a combination of Longitudinal feed and cross feed is used for the rolling process. In this method of operation, the cylindrical teeth are manipulated to feed at the shoulder of the part until the desired depth of the thread is reached, and then the part is automatically fed into the If the required thread length is greater than the width of a normal die, or if the thread is required to be rolled over the entire length of the bar, a longitudinal feed method must be used.


The each of the part where the part needs to be rolled, 30 should be machined at each end of the thread. Chamfer. The chamfering should be reduced in the part where the rolling is not required, or the part where the rolling wheel is broken, and The feeding time of the rolling wheel should also be reduced.


For stainless steel thick-walled tubes that require rolling, the blank diameter tolerance should be limited to a few tenths of an inch, usually controlled to be slightly below the diameter of the thread, paying particular attention to preventing metal work hardening before rolling.


305 to 0. 305mm supply. When the shovel is used in the lathe and the automatic lathe, the cutting speed is generally the same as the other tools, the double-roll traverse method is used to roll the thick-walled stainless steel pipe thread, it is generally recommended to use 0. 203 ~ 0. 305mm feed The exact value depends on the diameter and the number of threads per inch. The choice of feed rate can be consulted by the supplier of the rolling wheel equipment. Lubrication must be done when rolling the thread. -based cutting oils are generally used, especially for coarse thread. When rolling fine thread, it can be diluted with kerosene and lubricated. 




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