Heat treatment process of 3Cr2W8V mold

A mold and process technology, which is applied in the field of heat treatment process of 3Cr2W8V mold, can solve the problems of short service life and unsatisfactory effect, and achieve the effect of improving surface brightness, improving wear resistance and seizure resistance, and improving economic benefits

Inactive Publication Date: 2018-10-19
XIJING UNIV
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of the above situation, patent applications with publication numbers CN201410723688.6, CN201210264588.2, and CN201010148982.0 all propose heat treatment processes for different 3Cr2W8V molds, but the above methods are highly targeted, the effect is not very satisfactory, and the service life is short

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

[0025] A kind of heat treatment process of 3Cr2W8V mould, its step is:

[0026] Step 1: Annealing

[0027] Install the forging in a box-type furnace and heat it to 850°C, hold it for 150 minutes, cool to 730°C with the furnace and hold it for 180 minutes, cool it to 490°C at a speed limit of 30°C / h, then raise the temperature to 550°C for dehydrogenation annealing, and then Air-cooled to room temperature after leaving the furnace, and the hardness of the forging after isothermal annealing was 220HBS.

[0028] Step 2: Quenching

[0029] Prepare three salt bath furnaces with different temperatures in advance, which are 550°C graded salt bath furnace, 850°C medium temperature salt bath furnace, and 1130°C high temperature salt bath furnace; place the annealed forgings in the graded salt bath furnace first Preheat for 25 minutes, then quickly transfer to a medium temperature salt bath furnace for preheating for 18 minutes, then transfer to a high temperature salt bath furnace fo...

Embodiment 2

[0037] A kind of heat treatment process of 3Cr2W8V mould, its step is:

[0038] Step 1: Annealing

[0039] Install the forging in a box furnace and heat it to 800°C, hold it for 140 minutes, cool to 750°C with the furnace and hold it for 160 minutes, cool it to 480°C at a speed limit of 30°C / h, and then heat it up to 550°C for dehydrogenation annealing, then Air-cooled to room temperature after leaving the furnace, and the hardness of the forging after isothermal annealing was 220HBS.

[0040] Step 2: Quenching

[0041] Prepare three salt-bath furnaces with different temperatures in advance, which are graded salt-bath furnace at 600°C, medium-temperature salt-bath furnace at 900°C, and high-temperature salt-bath furnace at 1450°C; place the annealed forgings in the graded salt-bath furnace Preheat for 20 minutes, then quickly transfer to a medium-temperature salt-bath furnace for another 15 minutes, then transfer to a high-temperature salt-bath furnace for 10 minutes, take i...

Embodiment 3

[0049] A kind of heat treatment process of 3Cr2W8V mould, its step is:

[0050] Step 1: Annealing

[0051] Install the forging in a box-type furnace and heat it to 820°C, hold it for 145 minutes, cool to 740°C with the furnace and hold it for 170 minutes, cool it to 480°C at a speed limit of 30°C / h, then raise the temperature to 550°C for dehydrogenation annealing, and then Air-cooled to room temperature after leaving the furnace, and the hardness of the forging after isothermal annealing was 220HBS.

[0052] Step 2: Quenching

[0053] Prepare three salt-bath furnaces with different temperatures in advance, which are graded salt-bath furnace at 580°C, medium-temperature salt-bath furnace at 880°C, and high-temperature salt-bath furnace at 1300°C; place the annealed forgings in the graded salt-bath furnace Preheat for 23 minutes, then quickly transfer to a medium-temperature salt-bath furnace for another 16 minutes, then transfer to a high-temperature salt-bath furnace to keep ...

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

A heat treatment process of a 3Cr2W8V mold comprises the following steps of annealing, quenching, tempering, salt bath treatment and an ion sulphonitriding method. The heat treatment process of the 3Cr2W8V mold is optimized and adjusted, and the hardness, toughness and wear resistance of the 3Cr2W8V mold are effectively improved. In addition, after the 3Cr2W8V mold is subjected to ion sulphonitriding treatment, the wear resistance and occlusion resistance of a cavity are obviously improved, the service life of the mold is prolonged by 2-4 times compared with a mold not subjected to co-diffusion, the surface brightness of the product is obviously improved, the service life of the mold is prolonged, and economic benefits are increased.

Description

technical field [0001] The invention relates to the field of heat treatment processes for materials, in particular to a heat treatment process for 3Cr2W8V molds. Background technique [0002] During the forming process of aluminum alloy parts in the die-casting mold, when the molten aluminum alloy liquid is pressed into the cavity, the surface temperature of the cavity can reach about 600 °C. In order to prevent the aluminum alloy liquid from adhering to the mold cavity and the temperature of the mold cavity is too high, it is necessary to frequently apply anti-sticking paint to the mold cavity during work, resulting in repeated fluctuations in the surface temperature of the mold cavity. In order to ensure its good thermal conductivity and thermal fatigue resistance, 3Cr2W8V die-casting molds are usually used to die-cast aluminum alloy parts. However, due to its forming characteristics, die-casting molds for aluminum alloy parts often have phenomena such as mold sticking, er...

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): C21D9/00C21D6/00C21D3/06C21D1/26C21D1/19C21D1/607C23C8/36C23C8/28
CPCC21D9/0068C21D1/19C21D1/26C21D1/607C21D3/06C21D6/002C23C8/28C23C8/36
Inventor 雷同飞党波潘峰
Owner XIJING UNIV
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