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A processing technology of surfacing welding Stellite hard alloy thin-wall sleeve

A hard alloy and processing technology, which is applied in the field of processing thin-walled shaft sleeves, can solve the problems of shaft sleeve deformation, welding cracks and large deformation, and achieve the goal of eliminating stress, improving processing accuracy, and ensuring the mechanical properties of materials. Effect

Active Publication Date: 2021-12-17
SHENYANG SANKE HYDRAULIC MACHINERY MANUFACTORY
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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 surfacing Stellite hard alloy thin-walled 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 the heat treatment of the bushing damage ensures the mechanical properties of the material. Machining accuracy

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  • A processing technology of surfacing welding Stellite hard alloy thin-wall sleeve
  • A processing technology of surfacing welding Stellite hard alloy thin-wall sleeve
  • A processing technology of surfacing welding Stellite hard alloy thin-wall sleeve

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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 I: Carry out the size processing of the axle sleeve 1 before welding, the inner ...

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Abstract

The invention relates to a processing technology for surfacing welding Stellite hard alloy thin-wall sleeves, the steps comprising: blanking, heat treatment, size before car welding, installation of a welding support device, welding, installation of rough grinding tooling and rough grinding outside the welding position Round and semi-finishing turning, install the mandrel device for fine grinding and finishing turning process. The welding support device, rough grinding tooling and fine grinding tooling used in the present invention ensure the welding quality, solve the problems of welding cracks and large deformation in the previous welding process, heat treatment after welding eliminates the stress generated by welding, and the bushing blank Heat treatment is carried out to ensure the mechanical properties of the material, which solves the problem of deformation of the shaft sleeve during the grinding process of the thin wall thickness of the shaft sleeve in the past, and greatly improves the machining accuracy.

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 surfacing welding Stellite hard alloy thin-wall sleeves. Background technique [0002] Thin-walled large-scale bushings are frequently used in power plant circulating pumps. The bushings used in power plant circulating pumps have high requirements for 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 bushing is being processed, it is very difficult to weld the outer surface of the bushing with Stellite hard alloy, and the welding process is prone to cracks and difficult to control the amount of deformation; and the length of the bushing is Longer, it is difficult to control the amount of deform...

Claims

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Application Information

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Patent Type & Authority Patents(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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