Novel ceramic hot-work die steel

A hot work die steel and ceramic technology, applied in the field of metal-ceramic composite materials, can solve the problem of high cost and achieve the effects of strong toughness, cost saving, toughness and wear resistance

Inactive Publication Date: 2019-11-05
ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And these steel types need a lot of trace elements, the cost is relatively high

Method used

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  • Novel ceramic hot-work die steel
  • Novel ceramic hot-work die steel
  • Novel ceramic hot-work die steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043]The new ceramic hot work die steel, in parts by weight, consists of raw materials: 65 parts of steel scrap, 5 parts of kaolin, 6 parts of bauxite, 5 parts of quartz sand, 2 parts of mica, 1 part of bentonite, 2 parts of kyanite, 1.5 parts of spar, 1 part of calcite, 1 part of graphite, 1.5 parts of fluorite, 1 part of feldspar, 1 part of mullite, 5 parts of SiC, 1 part of zeolite, and 1 part of bauxite. Smelting and heat treatment are carried out according to the following technical scheme.

Embodiment 2

[0045] The new ceramic hot work die steel, in parts by weight, consists of raw materials: 70 parts of steel scrap, 2 parts of kaolin, 2 parts of bauxite, 5 parts of quartz sand, 2 parts of mica, 2 parts of bentonite, 1 part of kyanite, 1 part of spar, 1 part of calcite, 1 part of fluorite, 1 part of feldspar, 2 parts of mullite, 4 parts of SiC, 1 part of zeolite, 1 part of wollastonite, 1 part of spinel, 1 part of crystal stone, aluminum Magnesium ore 2 parts. Smelting and heat treatment are carried out according to the following technical scheme.

Embodiment 3

[0047] The new type of ceramic hot work die steel, in parts by weight, consists of raw materials: 60 parts of steel scrap, 8 parts of kaolin, 9 parts of bauxite, 5 parts of quartz sand, 1 part of mica, 1 part of kyanite, and 1 part of barite , 1 part of calcite, 1 part of fluorite, 1 part of feldspar, 2 parts of mullite, 3 parts of SiC, 1 part of zeolite, 3 parts of wollastonite, 1 part of spinel, and 2 parts of bauxite. Smelting and heat treatment are carried out according to the following technical scheme.

[0048] Melting and heat treatment solutions

[0049] Melting process: 1) Check the equipment. Including whether the intermediate frequency furnace, the water flow condition of the induction coil, the furnace wall, the furnace tilting device, the driving of the intermediate frequency machine, etc. are in good condition, and if there is any problem, start it up after repairing it.

[0050] 2) Weigh and add the charge as required, put the metal that is difficult to melt a...

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Abstract

The invention discloses novel ceramic hot-work die steel which is prepared from the raw material compositions in parts by weight: 60 to 70 percent of rolled steel, 2 to 8 percent of kaolin, 3 to 10 percent of bauxite, 3 to 8 percent of quartz sand, 1 to 3 percent of mica, 1 to 2 percent of bentonite, 1 to 2 percent of kyanite, 1 to 2 percent of barite, 1 to 2 percent of calcite, 1 to 2 percent ofgraphite, 1 to 2 percent of fluorite, 1 to 2 percent of feldspar, 1 to 2 percent of mullite, 2 to 5 percent of SiC, 1 to 2 percent of zeolite, 1 to 3 percent of wollastonite, 1 to 2 percent of spinel,1 to 2 percent of crystal stone, and 1 to 2 percent of aluminum magnesite ore. The novel ceramic hot-work die steel provided by the invention has the advantages of high strength, high hardness, hightoughness and wear resistance, can replace precious metal such as Cr, Mo, W and V, and is low in cost, cost-saving, and widely applied to manufacturing a hot-forging die, a hot-pressing die, a hot-extrusion die, a die-casting die and the like.

Description

technical field [0001] The invention belongs to the field of metal-ceramic composite materials, and in particular relates to a novel ceramic hot-working die steel. Background technique [0002] Hot working dies include hammer forging dies, hot extrusion dies and die-casting dies. As mentioned earlier, the main feature of the working conditions of hot work dies is the contact with hot metal, which is the main difference from the working conditions of cold work dies. Therefore, the following two problems will arise: [0003] (1) The metal on the surface of the mold cavity is heated. Usually, when the hammer forging die is working, the cavity surface temperature can reach above 300-400°C and the hot extrusion die can reach above 500-800°C; the cavity temperature of the die-casting die is related to the type of die-casting material and the pouring temperature. For example, when die-casting ferrous metals, the mold cavity temperature can reach above 1000°C. Such a high servic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/00C22C33/04
CPCC21D2211/005C21D2211/009C22C33/04C22C38/00
Inventor 柴知章杜宇风梁长洋
Owner ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
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