Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Machining process for strain-hardening seal head

A technology of strain strengthening and processing technology, which is applied in the direction of pressure vessels, fixed-capacity gas storage tanks, mechanical equipment, etc., can solve problems such as the drop, the inner surface finish of the head is not enough, the appearance quality of the head can not meet the requirements of use, etc., to achieve Ensure uniformity and avoid the effect of coarse weld grains

Inactive Publication Date: 2015-03-04
CHANGZHOU KUANGDA WEIDE MACHINERY
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are still more or less problems in the strain-strengthened products produced by many manufacturers: for example, due to poor welding, the head cannot meet the use requirements and the appearance quality has declined, and the smoothness of the inner surface of the head is not enough. and many more

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The present invention will now be described in further detail in conjunction with embodiments.

[0018] A processing technology for strain-strengthened heads specifically includes the following steps:

[0019] 1) Pre-qualify the welding process for the welded joints, in which a set of conventional assessments and a set of samples after 9% tensile deformation are required to determine the tensile strength and other performance parameters of the welded joints.

[0020] 2) Select austenitic stainless steel sheet with appropriate post-tensile strength according to the evaluated performance, cut the steel plate according to the size required by the process with a plasma cutting machine, and cut and polish the welding groove according to the process card requirements, and perform the end of the wafer Chamfering and grinding treatment;

[0021] 3) Tailor-welded wafers are made by welding two crescent-shaped plates. Plasma welding with concentrated heat and automatic argon tungsten arc...

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 machining process for a strain-hardening seal head. The machining process comprises the following steps: making welding process assessment; selecting and using a steel plate; cutting a wafer; molding the seal head; chamfering; pickling; polishing. According to the machining process, a high-quality steel plate material is selected and used, and the strength of the steel plate is controlled so as to ensure the performance and the molding quality of a welding joint of the seal head; the performance of the welding joint is ensured by pre-stretching (through 9 percent deformation) a welding test plate before the seal head is made; the requirement on the appearance size of the seal head is met by adopting an accurate mold.

Description

Technical field [0001] The invention relates to a processing technology of a sealing head, in particular to a processing technology of a sealing head for austenitic stainless steel strain strengthening. Background technique [0002] Austenitic stainless steel has good comprehensive mechanical properties and excellent corrosion resistance, and is a widely used pressure vessel steel. Generally, the yield strength of austenitic stainless steel is low, and the yield strength ratio is small. According to the current safety factor, its allowable stress is determined by the yield strength of the material, which leads to thicker walls of the designed pressure vessel, heavy equipment, and serious material waste. Manufacturing and transportation costs are high. Using the strain strengthening process to ensure that the original mechanical properties of the austenitic stainless steel is not greatly affected, a part of the material is plastically deformed, which can effectively improve the y...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00F16J13/00
Inventor 邱庆军蒋琍松黄俊峰
Owner CHANGZHOU KUANGDA WEIDE MACHINERY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com