Low-magnetism thread part manufacturing method

Abstract

The invention relates to a low-magnetism thread part manufacturing method, belonging to the machining technical field; the low-magnetism thread part manufacturing method includes the following steps: 316L stainless steel material is selected and machined into thread parts by a CNC slant bed machine tool, the magnetic field strength within 1m around the stainless steel material is maintained less than or equal to 2GAUSS, the machine tool is started for thread machining, the depth of cut is controlled to be 0.1-0.2mm, the rotation speed is 20-150r / min and the amount of feed is 0.15-0.2mm / r during rough turning; depth of cut is controlled to be 0.05-0.1mm, the rotation speed is 20-60r / min, the amount of feed is 0.15-0.2mm / r during finish turning; the depth of cut is controlled to be 0.05-0.1mm, the rotation speed is 20-60 r / m and the amount of feed is 0.15-0.2 mm / r during thread machining, and the residual magnetic field for the thread part is less than or equal to 15 GAMMA. The low-magnetism thread part manufacturing method has high efficiency and low manufacturing cost. The manufacturing method can be directly applicable to manufacturing parts with higher residual magnetic field requirements for military and civil products, and has broad application prospect especially in the signal transmission field.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a method for manufacturing low magnetic thread parts. Background technique [0002] In many technical fields, low-magnetic parts have been used more and more, and some low-magnetic parts require a residual magnetic field of 40GAMMA (1GAMMA=10 -9 TELSA), this level of low magnetic parts not only strictly controls the processing parameters during the processing process, but also requires avoiding magnetic infection during the detection and transportation process. Non-magnetic stainless steel with extremely low magnetic permeability is usually used to make low magnetic parts, but the magnetic properties of stainless steel will be increased during cold working; parts obtained by traditional methods need to add demagnetization process to ensure the requirements of parts for residual magnetic field. It is also easy to re-infect the magnetism after the parts a...

AI Technical Summary

Problems solved by technology

Non-magnetic stainless steel with extremely low magnetic permeability is usually used to make low magnetic parts, but the magnetic properties of stainless steel will be increased during cold working; parts obtained by traditional methods need to add demagnetization process to ensure the requirements of parts for residual magnetic field. Parts are also prone to re-infection after degaussing

When the processed part is a threaded part, due to the large amount of removal from the wool to the product, the deformation is large, and the transition area of ​​the non-magnetic steel structure is also very large, the part will obtain a large residual magnetic field after processing, which is difficult to meet the process requirements.