Forging die for heat insulation part, and forming process thereof

A molding process, a technology for heat insulation, applied in manufacturing tools, metal processing equipment, forging/pressing/hammer devices, etc., which can solve the problems of decreased strength and thermal stability, reduced mold service life, poor thermal fatigue resistance, etc. , to achieve the effect of improving crystal structure, improving performance, and uniform quenching and tempering structure

Pending Publication Date: 2022-02-01
扬州市龙江工矿机械有限公司
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

H13 steel works below 600°C, has good thermal stability and thermal fatigue resistance, and has a good combination of strength and toughness, but above 600°C, the strength and thermal stability of the material drop sharply, and the original excellent performance is lost.
However, H21 steel with high heat resistance has poor thermal fatigue resistance under high temperature conditions, and molds often fail due to cracks, which greatly reduces the service life of molds and increases production costs.

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
  • Forging die for heat insulation part, and forming process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A forming process of a forging mold for a heat insulating part, comprising the following steps,

[0034] S1, electric furnace smelting:

[0035] According to the component content of the hot work die steel, the pig iron and alloy materials are mixed, melted and smelted in an electric furnace, the molten steel temperature is 16-50°C, and the slag is oxidized. After the slag is removed, ferrosilicon alloy, lime, and fluorite are added. The tapping temperature is 1260°C. Add aluminum 1kg / t during the tapping process for deoxidation;

[0036] S2. Casting electrode billet: preheat the ingot mold to 40°C, then fill the ingot mold with argon gas, each ingot mold is filled with argon gas for 3 minutes, then withdraw the argon gas tube, cover the ingot mold with a cover, and then cast , the whole casting process is protected by argon protection castings with asbestos cloth, and the flow rate of argon protection is 15m 3 / h, the casting time is 4min, the diameter of the electro...

Embodiment 2

[0045] A forming process of a forging mold for a heat insulating part, comprising the following steps,

[0046] S1, electric furnace smelting:

[0047] According to the component content of the hot work die steel, the pig iron and alloy materials are mixed, melted and smelted in an electric furnace, the molten steel temperature is 1700 °C, and the slag is oxidized and removed. After the slag is removed, ferrosilicon alloy, lime, and fluorite are added. Add aluminum 1kg / t during the tapping process for deoxidation;

[0048] S2. Casting electrode billet: preheat the ingot mold to 50°C, then fill the ingot mold with argon gas, the time for each ingot mold to be filled with argon gas is 4 minutes, then withdraw the argon gas tube, cover the ingot mold with a cover, and then cast , the whole casting process is protected by argon protection castings with asbestos cloth, and the flow rate of argon protection is 20m 3 / h, the casting time is 6min, the diameter of the electrode blank...

Embodiment 3

[0057] A forming process of a forging mold for a heat insulating part, comprising the following steps,

[0058] S1, electric furnace smelting:

[0059] According to the component content of the hot work die steel, the pig iron and alloy materials are mixed, melted and smelted in an electric furnace, the molten steel temperature is ≥1 650°C, and the slag is oxidized. After the slag is removed, ferrosilicon alloy, lime, and fluorite are added, and the tapping temperature is ≥1260°C. ℃, add aluminum 1 kg / t during tapping for deoxidation;

[0060] S2. Casting electrode billet: preheat the ingot mold to 60°C, then fill the ingot mold with argon gas for 5 minutes, then withdraw the argon gas tube, cover the ingot mold with a cover, and then cast , the whole casting process is protected by argon protection castings with asbestos cloth, and the flow rate of argon protection is 26m 3 / h, the casting time is 8min, the diameter of the electrode blank is 908mm, and the mold is demoulded...

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
diameteraaaaaaaaaa
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to view more

Abstract

The invention relates to a forging die for a heat insulation part, and further relates to a forming process of the forging die for the heat insulation part. The forming process comprises the following steps: performing electric furnace smelting; casting an electrode blank; annealing the electrode blank: annealing at an annealing temperature of 710-760 DEG C under a heat preservation time of 1-1.5 min/mm, and discharging out of the furnace after being cooled to 300-350 DEG C; carrying out electroslag remelting; forging: heating an electroslag ingot to 1240-1280 DEG C, performing heat preservation for 15-30 h, performing diffusion homogenization, then heading, drawing, forging and cogging, carrying out multi-direction drawing in the X direction, the Y direction and the Z direction to the size of a finished product, and then performing primary water cooling till the temperature of the core of a blank is smaller than or equal to 500 DEG C; and carrying out ultrafine treatment. According to the forging die for the heat insulation part, and the forming process thereof, component design is conducted by adopting the low-Si, high-Mo and low-V alloy element design concept, so that a prepared product has good structure performance and mechanical performance, and the requirement of modern production for a high-end die is better met.

Description

technical field [0001] The invention relates to the technical field of metal material processing, in particular to a forging die of a heat insulating part and a forming process thereof. Background technique [0002] With the improvement of people's economic level, there are higher requirements for the quality of life. Cars are an integral part of modern life. People's demand for cars has also changed from simply satisfying daily transportation to pursuing more comfort. Major automobile manufacturers are also showing their skills in meeting market demand. One of the most basic improvements is heat insulation and noise reduction. More and more cars are equipped with aluminum plate heat insulation. The application of automotive aluminum plate heat insulation parts has given rise to some changes in automobile molds, the most notable of which is the guide form of the mold presser for automotive heat insulation parts. In traditional automotive panel moulds, the guide of the pre...

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): C21D1/32C21D8/00C22B9/18C22C38/02C22C38/04C22C38/20C22C38/22C22C38/24C22C38/42C22C38/44C22C38/46B21J5/06B21J13/02B23P15/24
CPCC22C38/04C22C38/02C22C38/22C22C38/24C22C38/20C22C38/44C22C38/46C22C38/42C22B9/18C21D8/005C21D1/32B23P15/24B21J13/02B21J5/06
Inventor 董丽红韩步兵
Owner 扬州市龙江工矿机械有限公司
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