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

Technique for thermal-treatment processing of high speed steel tools

A process method and high-speed steel technology, applied in heat treatment furnaces, heat treatment equipment, manufacturing tools, etc., can solve the problems of low work efficiency, back guide cracking, and waste products, and achieve the effect of improving production efficiency and reducing waste products.

Active Publication Date: 2012-11-28
SHENYANG AIRCRAFT CORP
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The operation process is cumbersome, the work efficiency is low, and often due to the phenomenon of secondary heating, the rear guide part is cracked and waste products are generated.

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

[0013] A process method for heat treatment processing of a Ф8mm high-speed steel cutting tool, comprising the following steps:

[0014] 1) The tail handle of the clamping tool;

[0015] 2) Put the whole tool into a medium-temperature salt furnace at 850°C for heat preservation. The heat preservation time is (0.4~0.8) min / mm×tool diameter=0.6 min / mm×8mm=4.8min, so that the overall hardness of the tool is HRC33-48, then air cooling;

[0016] 3) Calculate the holding time shared by the medium-temperature salt furnace and the high-temperature salt furnace:

[0017] S=1 minute+(4~6) seconds / mm L=1 minute+6 seconds / mm×8mm=1 minute 48 seconds;

[0018] 4) Put the leading edge and cutting edge of the tool into a high-temperature salt furnace at 1275°C for heat preservation. After 1 minute and 40 seconds, put the leading edge, cutting edge and trailing edge of the cutting tool into a high-temperature salt furnace for 8 seconds. , so that the hardness of the tool's leading edge and b...

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
thermal resistanceaaaaaaaaaa
hardnessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a technique for thermal-treatment processing of high speed steel tools. The technique comprises the following steps of: clamping tail handles of the tools; performing thermal preservation on the whole tools which are put into a medium-temperature salt furnace at 850 DEG C to enable the overall hardness of the tools to reach HRC (Rockwell hardness) 33-48, and then performing air cooling on the tools; performing thermal preservation on the precursors and edge parts of the tools in a high-temperature salt furnace at 1275 DEG C, and after a while, putting the precursors, edge parts and posterior bite guides of the tools into the high-temperature salt furnace to enable the hardness of the precursors and the edge parts to reach HRC 63-66, and the hardness of the posterior bite guides to reach HRC 53-58; and annealing the precursors to enable the hardness of the precursors to reach HRC 53-58. According to the technique, the different hardness of the different positions is achieved mainly by controlling the time of the tools in heating media, so that complicated processing steps are omitted, the working efficiency is greatly improved, the production period of the high-speed steel tools is shortened, and simultaneously, waste products are reduced.

Description

technical field [0001] The invention relates to a process method for heat treatment processing of high-speed steel cutters, which is suitable for the heat treatment process of high-alloy tool steel functional cutters. Background technique [0002] High-speed steel is a high-alloy tool steel containing more alloying elements such as w, Mo, Cr, V, etc. It has high bending strength and good toughness. The hardness at room temperature is 62~66HRC, and its heat resistance is about 600~660℃ . The cutting edge is easy to sharpen when sharpened, so it is often called "sharp steel" in production, and the polished high-speed steel is also called white steel. [0003] High-speed steel is one of the well-known cutting tool steels. Although the share of hard materials such as cemented carbide is increasing in the field of high-speed cutting of single-edged tools and difficult-to-machine materials, high-speed steel is still dominant in multi-edged tools, cutting processes subjected to 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): C21D9/22
Inventor 徐强邓楠
Owner SHENYANG AIRCRAFT CORP
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