Novel technique for high-frequency heat treatment of lathe tool

A high-frequency heat treatment and new process technology, applied in the direction of heat treatment furnace, heat treatment equipment, process efficiency improvement, etc., can solve the problem that the grain is not easy to be coarse, the hardness of heating and quenching is not easy to reach 64HRC, and the decarburization trend is small, and the cycle is achieved. The effect of short, low cost and simple process steps

Inactive Publication Date: 2013-09-04
SHENYANG AIRCRAFT CORP
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the shape of the turning tool is relatively simple, and its main working part is the blade. The tungsten carbide temperature of the tungsten series high-speed steel has a

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

Example Embodiment

[0013] A new process method for high frequency heat treatment of turning tools. The material of the tool is W18Cr4V and the size is 25mm×25mm×200mm. It includes the following steps:

[0014] 1) Put the turning tool into the box furnace to preheat: the first stage uses 580°C for 30 minutes, and the second stage uses 860°C for 1-1.5 hours;

[0015] 2) The head part of the turning tool (from the short cutting edge to 60mm back) is heated in a high-frequency induction heating device, the model of the heating device is GP100-C3, and the turning tool is placed in the induction ring (the inner ring size is Ф60mm , Height 40mm), when heating, the turning tool is placed in the center of the induction ring and moves up and down. The anode voltage is 10KV, the anode current is 4A, and the heating temperature is about 1280-1300°C. In order to control the heating speed, it can be powered on for a few seconds, then power off and then reheated, to ensure that the heat will not be overheated. Aft...

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 novel technique for high-frequency heat treatment of a lathe tool. The technique comprises the following steps: (1) the lathe tool is placed into a chamber furnace for preheating, heat preservation is performed for 30 minutes at 580 DEG C in the first stage, and heat preservation is performed for 1-1.5 hours at 860 DEG C at the second stage; (2) a tool bit part of the lathe tool is heated in high-frequency induction heating equipment, the heating temperature is about 1280 DEG C-1300DEG C, after the temperature is maintained for 60 seconds, the heating is over; (3) the lathe tool is taken out of an induction coil of the high-frequency induction heating equipment, oil-quenched, cooled to 250 DEG C and then is taken out of oil, and air-cooled; and (4) tempering is performed twice at the temperature ranging from 550 DEG C to 560 DEG C, the heat preservation time is 2 hours for each time, and after quenching, the external hardness of the tool bit is 64-66 HRC, and the internal hardness is 50-55 HRC. The novel technique for high-frequency heat treatment of the lathe tool has convenient steps, the quality of the lathe tool after the heat treatment meets requirements, and the technique has the advantages of short period, low cost and the like.

Description

technical field [0001] The invention relates to a new process method for high-frequency heat treatment of turning tools, which is used for the heat treatment method of W18Cr4V common turning tools. Background technique [0002] High-frequency quenching refers to a heat treatment method that uses high-frequency current to locally heat and cool the surface of the workpiece to obtain a surface hardened layer. High-frequency quenching only strengthens the surface of the workpiece at a certain depth, and the core basically maintains the structure and performance before treatment. The workpiece after high-frequency quenching has comprehensive mechanical properties such as high strength, high wear resistance and high toughness. [0003] High-frequency quenching is mostly used for surface quenching of industrial metal parts. It is a metal heat treatment method that generates a certain induction current on the surface of the workpiece, rapidly heats the surface of the part, and then ...

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): C21D9/22C21D1/10
CPCY02P10/25
Inventor 徐强邓楠尹冰王健
Owner SHENYANG AIRCRAFT CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap