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

Quenching method of 45# steel workpiece

A technology for workpieces and quenching agents, applied in the direction of quenching agents, manufacturing tools, heat treatment equipment, etc., can solve problems such as quenching cracking

Active Publication Date: 2014-01-08
珠海市顺志机械制造有限公司
View PDF2 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of quenching cracking, the present invention provides a quenching method for 45# steel workpieces

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 1

[0015] The steps of the quenching method for a 45# steel workpiece of the present invention are as follows: Place the workpiece in a heating device, heat it to 885°C, and keep it warm for 1.5 hours; quench it with a quenching agent at 75°C, and temper it at 505°C.

[0016] Wherein, the formula of quenching agent is: Potassium chloride: 5.5kg, sodium chloride 1.5kg, water 93kg.

[0017] The preparation method of the quenching agent is as follows: adding potassium chloride and sodium chloride in the formula quantity into the water in the formula quantity, and stirring evenly.

Embodiment 2

[0019] The steps of a quenching method for a 45# steel workpiece of the present invention are as follows: Place the workpiece in a heating device, heat it to 880°C, and keep it warm for 1 hour; quench it with a quenching agent at 73°C, and temper it at 510°C.

[0020] Wherein, the formula of quenching agent is: Potassium chloride: 5.5kg, sodium chloride 1.5kg, water 93kg.

[0021] The preparation method of the quenching agent is as follows: adding potassium chloride and sodium chloride in the formula quantity into the water in the formula quantity, and stirring evenly.

Embodiment 3

[0023] The steps of a quenching method for a 45# steel workpiece of the present invention are as follows: Place the workpiece in a heating device, heat it to 890°C, and keep it warm for 2 hours; quench it with a quenching agent at 70°C, and temper it at 510°C.

[0024] Wherein, the formula of quenching agent is: Potassium chloride: 6kg, sodium chloride 2kg, water 92kg.

[0025] The preparation method of the quenching agent is as follows: adding potassium chloride and sodium chloride in the formula quantity into the water in the formula quantity, and stirring evenly.

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 provides a quenching method of a 45# steel workpiece. The quenching method comprises the following steps of: heating the workpiece to 880 DEG C-890 DEG C in a heating device, and preserving the heat for 1 hour-2 hours; quenching by using a quenching agent with temperature of 100 DEG C-120 DEG C, and tempering at 500 DEG C-510 DEG C, wherein the quenching agent consists of the following substances in percentage by mass: 5%-6% of potassium chloride, 1%-2% of sodium chloride and the balance of water. The 45# steel made by using the quenching method disclosed by the invention cannot crack during quenching.

Description

technical field [0001] The invention belongs to the technical field of material heat treatment, and in particular relates to a quenching method for 45# steel workpieces. Background technique [0002] 45# steel is a high-quality carbon structural steel widely used at present. Since 45# steel has good comprehensive mechanical properties after quenching and tempering treatment, when making some key parts (with a size of Φ5-Φ12), the design drawings Most of them require the selection of cold drawn 45 round steel for quenching and tempering (quenching + high temperature tempering) treatment. [0003] At present, the commonly used quenching method for 45# steel is heating to 840-860°C for brine quenching and tempering at 540°C. During such quenching treatment, quenching and cracking of cold-drawn 45 round steel often occurs, resulting in the scrapping of parts. Hundreds of small shafts with a size of Φ8 were scrapped after heat treatment due to quenching cracks, and hundreds of s...

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): C21D1/18C21D1/60
Inventor 杨龙兴
Owner 珠海市顺志机械制造有限公司
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