Unlock instant, AI-driven research and patent intelligence for your innovation.

Deformation resisting method for carburized and quenched thin-walled workpiece

A technology for carburizing and quenching and thin-walled parts, which is applied in the field of deformation prevention of carburizing and quenching thin-walled parts, can solve the problems of excessive deformation, easy deformation, and failure to meet the requirements of drawings, and can solve the problem of carburizing and quenching deformation and eliminate deformation. Effect

Active Publication Date: 2017-08-11
HARBIN TURBINE +1
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that thin-walled parts are easily deformed during carburizing and quenching, and the deformation is too large, resulting in the failure to meet the requirements of the drawings after machining, and to provide a method for preventing deformation of carburized and quenched thin-walled parts

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Deformation resisting method for carburized and quenched thin-walled workpiece
  • Deformation resisting method for carburized and quenched thin-walled workpiece

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0008] Specific implementation mode 1: In this implementation mode, a method for preventing deformation of carburized and quenched thin-walled parts is carried out according to the following steps: 1. Cutting and normalizing; Thick margin, car flat; 3. Tempering; 4. Carburizing inner hole, leave 0.30mm margin on each side, leave a margin equal to the wall thickness of the workpiece on each side of the outer circle of the car, leave 25mm at each end of the workpiece Measurement, the inner hole at the left end is enlarged by 2mm on each side, and the depth is 20mm; the inner hole on the right side is enlarged by 2mm on each side, and the depth is 30mm; 5. Copper plating protection on all surfaces of the workpiece; 6. Sand off the copper plating layer of the inner hole; 7. Carburizing and inspection ;8. Car ring groove on the outer circle 30mm away from the right end face. The diameter of the ring groove is 6mm larger than the diameter of the workpiece, and the length of the ring ...

specific Embodiment approach 2

[0011] Embodiment 2: This embodiment differs from Embodiment 1 in that: the normalizing described in step 1 refers to heating the workpiece to 727-912° C., heating for 40-60 minutes, keeping warm for 2-3 hours, and cooling. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0012] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in Step 2, a margin of 1.25 times the wall thickness of the workpiece is left on each side of the inner hole. Others are the same as those in the first or second embodiment.

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

PUM

No PUM Login to View More

Abstract

The invention relates to a deformation resisting method for a carburized and quenched thin-walled workpiece. The deformation resisting method for the carburized and quenched thin-walled workpiece aims to solve the problems that when the thin-walled workpiece is carburized and quenched, the thin-walled workpiece is quite prone to deformation and excessive in deformation, so that the thin-walled workpiece cannot meet the drawing requirement after being machined. The deformation resisting method for the carburized and quenched thin-walled workpiece comprises the steps of conducting feeding, and conducting normalization; roughly turning an outer circle, wherein a certain allowance is reserved on each face of an inner hole, and each face of the inner hole is turned flat; conducting tempering; carburizing the inner hole; plating all the surfaces of the workpiece with copper for protection; removing the copper plating layer of the inner hole through sanding; conducting carburization and detection; turning an annular groove; conducting quenching; turning the inner hole; accurately grinding the inner hole; cutting off a right chuck of the workpiece with a wire cutting machine; reserving the allowance of 0.20 mm on each face of the outer circle according to the product drawing of the workpiece and accurately turning other parts; accurately grinding the outer circle and detecting the outer circle; and completing machining. By the adoption of the deformation resisting method for the carburized and quenched thin-walled workpiece, deformation of the product is controlled to be within the required range of the technology and the drawing, the product quality meets the drawing requirement, and the problem that the thin-walled workpiece deforms during carburizing and quenching is solved. The deformation resisting method for the carburized and quenched thin-walled workpiece is applied to the field of machining of the carburized and quenched thin-walled workpiece.

Description

technical field [0001] The invention relates to a method for preventing deformation of carburized and quenched thin-walled parts. Background technique [0002] Thin-walled parts are easily deformed during carburizing and quenching, and the deformation is too large, resulting in failure to meet the drawing requirements after machining. For example: a key product is shown in the picture: its material is 20Cr, the diameter of the inner hole is Φ120h7, the diameter of the outer circle is Φ136 (+0.035, 0), and the length is 222mm. The wall thickness is 8mm. . After carburizing and quenching, the deformation is about 0.3-0.5mm on one side, which is seriously out of tolerance! Neither the inner hole nor the outer circle can be ground, resulting in scrapped products. Contents of the invention [0003] The purpose of the present invention is to solve the problem that thin-walled parts are easily deformed during carburizing and quenching, and the deformation is too large, resulti...

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

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 隋朝龙孙晓东李凡琦孙艳秋
Owner HARBIN TURBINE
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com