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Anti-oxidation decarburization protective agent and preparation method thereof and heat treatment process of H13 mold

A protective agent and anti-oxidation technology, which is applied in heat treatment furnaces, heat treatment equipment, manufacturing tools, etc., can solve the problems of high cost, high equipment cost, and reduced mechanical properties, achieving obvious effects, good effects, and reduced oxidation burning loss rate Effect

Active Publication Date: 2016-12-07
河南中轴福漫锻造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the hot forging die of H13 (4Cr5MoSiV1) material is characterized by a long service life, which is 3 to 4 times that of the hot forging die of 5CrNiMo material, which can effectively improve production efficiency and reduce production costs, but the die heat treatment technology of H13 material Difficult to use vacuum furnace for heat treatment
However, the cost of vacuum furnace equipment is high, and it is difficult for general enterprises to purchase, and the heat treatment process of vacuum furnace is complicated and expensive, and is often limited by the size and shape of the mold
How to use ordinary trolley furnace to solve the heat treatment process of H13 mold, the difficulty is mainly reflected in that when H13 mold is heated to 1000°C in the heat treatment furnace, oxidation reaction will occur with the oxygen in the air, so that the metal will be oxidized and form scale , decarburization will also occur on the surface of the mold cavity, which not only causes a large loss of H13 mold steel, but also reduces its mechanical properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] An anti-oxidation and decarburization protective agent, which is composed of the following raw materials in parts by weight: 0.5 parts of aluminum oxide, 1 part of zirconia, 2 parts of magnesium oxide, 2 parts of chromium oxide, 10 parts of borax, 0.2 parts of graphite, nitriding 0.3 parts of boron, 1 part of boron oxide, 20 parts of bismuth oxide, 0.5 parts of zinc oxide, 2 parts of silicon dioxide, 6 parts of aluminum tripolyphosphate, 40 parts of water, 40 parts of additives;

[0023] Wherein, the auxiliary agent is obtained by mixing deionized water and methyl cellulose, and the mass percentage of methyl cellulose in the auxiliary agent is 3%.

[0024] The preparation method of the above-mentioned antioxidant decarburization protective agent comprises the following steps:

[0025] (1) Weigh each raw material in proportion;

[0026] (2) Mix aluminum oxide, zirconia, magnesium oxide, chromium oxide, borax, carbonaceous matter, boron nitride, boron oxide, bismuth oxid...

Embodiment 2

[0036] An anti-oxidation and decarburization protective agent, which is composed of the following raw materials in parts by weight: 0.4 parts of aluminum oxide, 0.9 parts of zirconia, 1.8 parts of magnesium oxide, 1.8 parts of chromium oxide, 9 parts of borax, 0.1 part of graphite, nitriding 0.2 parts of boron, 0.5 parts of boron oxide, 18 parts of bismuth oxide, 0.3 parts of zinc oxide, 1.8 parts of silicon dioxide, 5 parts of aluminum tripolyphosphate, 35 parts of water, 40 parts of additives;

[0037] Wherein, the auxiliary agent is obtained by mixing deionized water and methyl cellulose, and the mass percentage of methyl cellulose in the auxiliary agent is 2.5%.

[0038] The preparation method of the above-mentioned antioxidant decarburization protective agent comprises the following steps:

[0039] (1) Weigh each raw material in proportion;

[0040] (2) Mix aluminum oxide, zirconia, magnesium oxide, chromium oxide, borax, carbonaceous matter, boron nitride, boron oxide, ...

Embodiment 3

[0050] An anti-oxidation and decarburization protective agent, which is composed of the following raw materials in parts by weight: 0.6 parts of aluminum oxide, 1.1 parts of zirconia, 2.2 parts of magnesium oxide, 2 parts of chromium oxide, 11 parts of borax, 0.3 parts of graphite, 0.4 parts of boron, 1.5 parts of boron oxide, 22 parts of bismuth oxide, 0.5 parts of zinc oxide, 2.5 parts of silicon dioxide, 8 parts of aluminum tripolyphosphate, 45 parts of water, 45 parts of additives;

[0051] Wherein, the auxiliary agent is obtained by mixing deionized water and methyl cellulose, and the mass percentage of methyl cellulose in the auxiliary agent is 4%.

[0052] The preparation method of the above-mentioned antioxidant decarburization protective agent comprises the following steps:

[0053] (1) Weigh each raw material in proportion;

[0054] (2) Mix aluminum oxide, zirconia, magnesium oxide, chromium oxide, borax, carbonaceous matter, boron nitride, boron oxide, bismuth oxid...

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Abstract

The invention discloses an anti-oxidation decarburization protective agent. The anti-oxidation decarburization protective agent comprises the following raw materials in parts by weight: 0.4-0.6 part of aluminum oxide, 0.85-1.2 parts of zirconium oxide, 1.8-2.2 parts of magnesium oxide, 1.8-2.2 parts of chromic oxide, 9-11 parts of borax, 0.1-0.3 part of carbon-contained matter, 0.2-0.4 part of boron nitride, 0.5-1.5 parts of boron oxide, 18-23 parts of bismuth oxide, 0.3-0.5 part of zinc oxide, 1.8-2.5 parts of silicon dioxide, 5-10 parts of curing agents, 35-45 parts of water, and 40-45 parts of auxiliaries. The anti-oxidation decarburization protective agent is not limited by the mold size and shape; and a H13 mold coated with the anti-oxidation decarburization protective agent is obvious in anti-oxidation effect, reduces the oxidation burn loss by above 91% after annealing and tempering, and reaches the hardness of 48-52 HRC.

Description

technical field [0001] The invention belongs to the technical field of metal heat treatment, and in particular relates to an anti-oxidation and decarburization protective agent, a preparation method thereof, and a heat treatment process of an H13 mould. Background technique [0002] At present, the hot forging die of H13 (4Cr5MoSiV1) material is characterized by a long service life, which is 3 to 4 times that of the hot forging die of 5CrNiMo material, which can effectively improve production efficiency and reduce production costs, but the die heat treatment technology of H13 material The difficulty is high, and it needs to be heat-treated in a vacuum furnace. However, the cost of vacuum furnace equipment is high, and it is difficult for general enterprises to purchase, and the heat treatment process of vacuum furnace is complicated and expensive, and is often limited by the size and shape of the mold. How to use ordinary trolley furnace to solve the heat treatment process ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/70C21D9/00
CPCC21D1/70C21D9/0068C21D2211/008
Inventor 薛斌斌刘鹏张晶姜文京郭保新邵双拾杨立文孙小克呼牛何福群
Owner 河南中轴福漫锻造有限公司
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