Machining technology of thin-wall sleeve with surfacing hard stellite

A technology of hard alloy and processing technology, which is applied in the field of processing technology for stacking and dismantling Stellite hard alloy thin-walled sleeves. It can solve problems such as welding cracks, large deformation, and shaft sleeve deformation, and achieve stress relief and improve processing. Accuracy, the effect of ensuring welding quality

Active Publication Date: 2019-11-15
SHENYANG SANKE HYDRAULIC MACHINERY MANUFACTORY
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] In order to make up for the above-mentioned deficiencies in the prior art, the purpose of the present invention is to propose a processing technology for overlay welding of hard alloy sea wall sleeves, which ensures the welding quality and solves the problems of welding cracks and large deformations in the previous welding process. The problem is that heat treatment after welding eliminates the stress caused by welding, and heat treatment is carried out for shaft damage to ensure the mechanical properties of the material. Machining accuracy

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  • Machining technology of thin-wall sleeve with surfacing hard stellite
  • Machining technology of thin-wall sleeve with surfacing hard stellite
  • Machining technology of thin-wall sleeve with surfacing hard stellite

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Embodiment Construction

[0035] The present invention describes the technical solution of the present invention in detail as follows through specific embodiments. Include the following steps:

[0036] The outer dimension of the shaft sleeve is Φ220mm / Φ200mx700mm, and the material is stainless steel;

[0037] (1) Cutting: Cutting according to the outline size of the drawing, the wall thickness of the shaft sleeve is 10mm, the material of the shaft sleeve is the profile material, that is, the cylinder material, the inner hole and the outer circle are guaranteed to have a machining allowance of 5-10mm on one side, and the axial length The margin is guaranteed to be 15mm-20mm;

[0038] (2) heat treatment: rough blank is carried out heat treatment;

[0039] (3) Component analysis: process component analysis test block, carry out chemical component analysis according to GB / T11170 ASTMA240 standard;

[0040] (4) Rough turning 1: Carry out the machining of the shaft sleeve 1 before welding, the inner hole ...

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Abstract

The invention relates to a machining technology of a thin-wall sleeve with surfacing hard stellite. The machining technology comprises steps as follows: blanking, heat treatment, size processing before turning and welding, mounting of a welding support device, welding, mounting of a coarse grinding tool for coarse grinding of welding position excircle, semi-finish turning as well as mounting of amandrel device for accurate grinding and finish turning. With the adoption of the welding support device, the coarse grinding tool and an accurate grinding tool, welding quality is guaranteed, the problems of welding cracks and large deformation in conventional welding process are solved, the heat treatment is performed after welding, stress produced by welding is eliminated, a shaft sleeve blankis subjected to heat treatment, mechanical properties of materials are guaranteed, the problem of deformation of the shaft sleeve in the grinding process of the conventional shaft sleeve with thinnerwall is solved, and machining precision is greatly improved.

Description

technical field [0001] The invention relates to a processing technology of a thin-walled shaft sleeve. In particular, it relates to a processing technology for stacking and disassembling Stellite hard alloy thin-wall sleeves. Background technique [0002] Thin-walled large-scale bushings are frequently used in power plant circulation springs. The bushings used in power plant circulation springs have higher requirements on the surface hardness, wear resistance and machining accuracy of the bushings, and the wall thickness of the bushings is often required to be thicker than the outer surface. Stellite carbide with extremely high welding hardness. [0003] In the prior art, when the thin-walled shaft sleeve is processed, it is very difficult to weld the outer surface of the shaft sleeve with Stellite hard alloy, and the welding process is prone to cracks and the deformation is difficult to control; and the shaft eclipse length Longer and thicker wall, it is difficult to cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 高冬王志德张义武
Owner SHENYANG SANKE HYDRAULIC MACHINERY MANUFACTORY
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