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Bimetal compound high-toughness, high-boron and high-speed steel hammer and preparing method thereof

A high-toughness, bimetallic technology, applied in the field of wear-resistant metal materials, can solve the problems of high production cost, undurable hammer head, frequent replacement of hammer heads, etc., achieve convenient heating, increase flushing time, and facilitate metallurgical bonding Effect

Inactive Publication Date: 2016-02-03
DANYANG JIAWEI WEAR RESISTANT MATERIAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The purpose of the present invention is to solve the deficiencies in the prior art, and proposes an inlay casting process of a composite hammer head, which solves the disadvantages and shortcomings of the existing bimetallic composite technology, and the produced hammer head is not durable and has a long service life Short, frequent replacement of hammer head and high production cost

Method used

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  • Bimetal compound high-toughness, high-boron and high-speed steel hammer and preparing method thereof
  • Bimetal compound high-toughness, high-boron and high-speed steel hammer and preparing method thereof
  • Bimetal compound high-toughness, high-boron and high-speed steel hammer and preparing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] (1) Material composition design of hammer head and hammer handle:

[0067] ①The chemical composition and mass percentage of the high-boron high-speed steel hammer head are: 0.45%C, 0.9%B, 3.8%Cr, 0.5%Si, 3.8%Mn, 0.8%Mo, 1.5%W, 0.5%V, 0.4% Cu, 0.40%Ti, 0.05%Nb, 0.10%Ca, 0.06%Ce, 0.05%Y, 0.04%N, 0.12%Mg, 0.06Ba, 0.04%K, S<0.03%, P<0.04%, the balance is Fe and unavoidable impurity elements.

[0068] ② The chemical composition and mass percentage of the hammer handle material are; the chemical composition and mass fraction of low-carbon bainite steel are: 0.20% C, 2.50% Mn, 1.00% Si, 0.02N, 0.005% B, 0.03% Nb, 0.010% Ba, 0.05% ReSiMg, <0.03% S, <0.04% P, the balance is Fe and unavoidable impurity elements.

[0069] The manufacturing process steps are:

[0070] (1) Manufacture of boron agent and metamorphic inoculant:

[0071] Crush ferrovanadium, ferrotitanium, ferroniobium, potassium oxide, silicon-calcium-barium alloy, and nitrogen-containing ferrochrome into 60-100 m...

Embodiment 2

[0092] The present invention can be realized through the design and technical scheme of following basic chemical composition, comprises the following steps:

[0093] (1) Material composition design of high boron high speed steel hammer head and hammer handle:

[0094] ①The chemical composition and mass percentage of the high boron high speed steel hammerhead material are: 0.6%C, 1.5%B, 4.5%Cr, 0.8%Si, 4.5%Mn, 2.0%Mo, 2.5%W, 1.0%V, 0.90% Cu, 0.80%Ti, 0.15%Nb, 0.15%Ca, 0.20%Ce, 0.15%Y, 0.10%N, 0.20%Mg, 0.08Ba, 0.10K, S<0.03%, P<0.04%, the balance is Fe and unavoidable impurity elements.

[0095] ② The material of the hammer handle is directly made of low alloy steel.

[0096] The manufacturing process steps are:

[0097] (1) Manufacture of boron agent and metamorphic inoculant:

[0098] Crush ferrovanadium, ferrotitanium, ferroniobium, potassium oxide, silicon-calcium-barium alloy, and nitrogen-containing ferrochrome into 60-100 mesh powders, and crush 60-100 mesh BC, BN, B ...

Embodiment 3

[0116] The present invention can be realized through the design and technical scheme of following basic chemical composition, comprises the following steps:

[0117] (1) Material composition design of high boron high speed steel hammer head and hammer handle:

[0118] ①The chemical composition and mass percentage of the hammerhead material are: 0.8%C, 2.4%B, 5.2%Cr, 1.0%Si, 5.5%Mn, 3.0%Mo, 3.5%W, 1.5%V, 1.4%Cu, 1.0% Ti, 0.3%Nb, 0.25%Ca, 0.3%Ce, 0.2%Y, 0.18%N, 0.25%Mg, 0.15Ba, 0.13%K, S<0.03%, P<0.04%, the balance is Fe and unavoidable impurity elements.

[0119] ② The chemical composition and mass percentage of the hammer handle material are; the chemical composition and mass fraction of low-carbon bainite steel are: 0.35% C, 3.00% Mn, 1.70% Si, 0.08N, 0.010% B, 0.07% Nb, 0.020% Ba, 0.25% ReSiMg, <0.03% S, <0.04% P, the balance is Fe and unavoidable impurity elements.

[0120] The manufacturing process steps are:

[0121] (1) Manufacture of boron agent and metamorphic inoc...

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Abstract

The invention discloses a bimetal compound high-toughness, high-boron and high-speed steel hammer and a preparing method thereof. A hammer handle is made of low-carbon bainite steel. The hammer is made of high-toughness and high-boron wear-resisting steel. A medium-frequency induction heater is installed outside a sand box. During molding, after impurities on the surface of a hammer handle compound part are removed, the surface of the hammer handle is coated with an antioxidant, sleeved with a hammer evanescent mold and put into a sand mold to be molded, and a sprue and an ingate are molded through an evanescent model. In-mold preheating is conducted on the hammer handle through medium-frequency induction, after a preset temperature is reached, smelted hammer molten steel is poured at the temperature of 1560-1620 DEG C, after pouring is completed, a certain time of heat preservation is conducted, unpacking cleaning is conducted, and then heat treatment is conducted. The technology is simple, metallurgical bonding is achieved on a bimetal compound hammer interface, product quality is good, and safety is high. The defects that the service life of a hammer produced in the prior art is short and production cost is high are overcome. The service life of the bimetal compound high-toughness, high-boron and high-speed steel hammer is prolonged by three or more times than that of a high manganese steel hammer.

Description

technical field [0001] The invention relates to the field of wear-resistant metal materials, in particular to a double-metal composite high-toughness high-boron high-speed steel hammer and a preparation method thereof. Background technique [0002] Hammer crusher is a crushing machinery widely used in industries such as building materials, cement, ceramics, metallurgy, mining, electric power, refractory materials and chemical fertilizers, and the hammer head is the main component and a large amount of easy-wearing parts for crushing materials. very big. The working surface of the hammer head is in contact with the material, resulting in high stress wear. Since the crushed materials are generally hard objects such as rocks and metal ores, the wear of the parts is relatively serious. Through the analysis of the microscopic morphology of the hammer head surface, the wear process of the hammer head is the result of the combined action of deformation and erosion wear. This is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/38C22C38/32C22C38/12C22C33/04B22D19/16
Inventor 丁家伟皇志富丁刚耿德英鹿微微鹿策施孟达
Owner DANYANG JIAWEI WEAR RESISTANT MATERIAL TECH CO LTD
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