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

Preparation method of double-phase heterogeneous reinforced weldless box

A welding seam-free, manufacturing method technology, applied in manufacturing tools, heat treatment equipment, furnaces, etc., can solve problems such as poor fatigue performance, low toughness, and reduced corrosion resistance at weld bead positions, achieve good strength, meet application requirements, Ease of industrial production

Active Publication Date: 2020-07-17
NANJING UNIV OF SCI & TECH
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the welded structure inevitably forms a hot-melt joint zone at the weld, which has the disadvantages of low toughness and poor fatigue performance
In addition, welding can easily lead to the formation of carburized chromium-poor nickel-poor areas of stainless steel, resulting in a decrease in the corrosion resistance of the weld bead

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
  • Preparation method of double-phase heterogeneous reinforced weldless box
  • Preparation method of double-phase heterogeneous reinforced weldless box
  • Preparation method of double-phase heterogeneous reinforced weldless box

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] With reference to each accompanying drawing, the embodiments of the present invention will be described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention does not Limited to the following examples.

[0026] The device of the present invention includes: stamping forming device (stamping motor, upper die holder, punch fixed plate, punch, hydraulic column, positioning plate, fixed bolt, die, lower die holder, etc.), reciprocating hydraulic deformation device (hydraulic press, fixed block, upper mold, lower mold, top block, pressure head and hydraulic pump, etc.).

[0027] The present invention takes the stamped and formed non-welded box as an example, and provides detailed implementation and specific operations. The following examples involve four steps including: box stamping,...

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

PropertyMeasurementUnit
hardnessaaaaaaaaaa
hardnessaaaaaaaaaa
Login to View More

Abstract

The invention provides a manufacturing method of a double-phase heterogeneous reinforced weldless box. The method comprises four processes as follows: punch forming of a box body, stress relief annealing treatment, installation of a reciprocating hydraulic deformation device and reciprocating hydraulic deformation. The method is characterized in that stainless steel sheets are punched with a punchforming technology, and a main body of a box part is obtained; a residual deformation structure in the part after the punch forming is eliminated by the stress relief annealing treatment, and deformation stress is restored; and for the process of reciprocating hydraulic deformation, martensitic transformation of an austenite structure at the part is induced by strain in a loading area of the box,box strength is increased by the martensitic structure, the austenite structure at the other part is retained, and therefore, the box has good toughness.

Description

technical field [0001] The invention relates to the field of manufacturing box parts, in particular to a method for preparing a two-phase isomerism strengthened non-welded box. Background technique [0002] Box parts are often used as storage containers for liquids or gases. Such parts usually need to withstand internal or external pressure, and have high requirements for safety and airtight performance. During container transportation and transfer, materials need to have a certain ability to resist external shock or vibration loads. In addition, tanks used to store water or other corrosive liquids also need to have excellent corrosion resistance. Therefore, the most widely used material for making box parts is stainless steel. However, the strength of traditional stainless steel is low, and the thickness of the steel plate usually needs to be increased to meet the force requirements, resulting in an increase in the weight of the box parts, which brings inconvenience to it...

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): B21D35/00B21D22/02B21D26/02C21D9/00C21D1/30
CPCB21D35/001B21D22/02B21D26/02C21D9/0068C21D1/30
Inventor 肖礼容刘亿周浩陈雪飞魏康高波曹阳聂金凤李玉胜
Owner NANJING UNIV OF SCI & TECH
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