Machining process of precipitation hardening stainless steel pump shaft

A precipitation-hardening, stainless steel pump technology, applied in the field of pump shaft processing technology, can solve the problems of easy fracture and failure of the pump shaft, achieve stable size, eliminate processing stress, and ensure dimensional accuracy
CN106112418AActive Publication Date: 2016-11-16SHENYANG SANKE HYDRAULIC MACHINERY MANUFACTORY
7 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENYANG SANKE HYDRAULIC MACHINERY MANUFACTORY
Publication Date
2016-11-16
Patent Text Reader

Abstract

The invention relates to a machining process of a precipitation hardening stainless steel pump shaft. The machining process comprises the steps of: forging, rough turning I, UT inspection, heat treatment, rough turning II, high-temperature aging, semi-finish turning I, semi-finish turning II, low-temperature aging, grinding, finish turning I, polishing I, lineation, milling, polishing II, flaw detection, chromium plating, hydrogen removing treatment, chromium plating protection removal, polishing III, polishing IV, finishing, and obtaining of a finished product. The pump shaft machining process is low in hardening effect and size deformation, excellent in pump shaft machining size precision and high in surface smoothness, controls the size inspection below 40 DEG C after machining, is high in machining efficiency and quality, can guarantee the pump shaft size precision and low shape and position size tolerance deformation, and satisfies the drawing size requirements and the technical requirements.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a processing technology of a pump shaft, in particular to a processing technology of a precipitation-hardened stainless steel pump shaft. Background technique

[0002] 0Cr17Ni4Cu4Nb is a typical martensitic precipitation-hardening stainless steel. Its nickel content is low, and its martensite transformation temperature is higher than room temperature. After cooling to room temperature through solid solution temperature, its structure transforms into martensite, and then undergoes aging treatment. The copper phase is precipitated in the martensite matrix, which further improves the strength. Due to the low carbon content, the steel has good machinability in solid solution state, and its corrosion and weldability are better than those of martensitic stainless steel.

[0003] 0Cr17Ni4Cu4Nb has good corrosion resistance and high temperature oxidation resistance, and has excellent high temperature resistance mechanical properties b...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More