Bimetal composite high-tenacity, high-boron and high-chrome 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 undurable hammer heads, frequent replacement of hammer heads, high production costs, etc., to increase the flushing time, facilitate metallurgical bonding, and facilitate heating Effect

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

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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 composite high-tenacity, high-boron and high-chrome steel hammer and preparing method thereof
  • Bimetal composite high-tenacity, high-boron and high-chrome steel hammer and preparing method thereof
  • Bimetal composite high-tenacity, high-boron and high-chrome 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] ① The chemical composition and mass percentage of high boron and high chromium steel hammer head materials are; %Ti, 0.2%V, 0.10%Ca, 0.15%Ce, 0.08%Y, 0.07%N, 0.06, 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, potassium oxide, silicon-calcium-barium alloy, and nitrogen-containing ferrochrome into 60-100 mesh powders, and crush 60-100 mesh BC, BN, B 2 o 3 、Si 3 N 4 Together with the modif...

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 hammer head and hammer handle:

[0094] ① The chemical composition and mass percentage of high boron and high chromium steel hammer head materials are; %Ti, 0.30%V, 0.20%Ca, 0.20%Ce, 0.15%Y, 0.14%N, 0.08, 0.09%K, 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, potassium oxide, silicon-calcium-barium alloy, and nitrogen-containing ferrochrome into 60-100 mesh powders, and crush 60-100 mesh BC, BN, B 2 o 3 、Si 3 N 4 Together with modified elements rare earth Ce and Y, according to the mass percentage of 1.40% B, 0.30...

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 hammer head and hammer handle:

[0118] ①The chemical composition and mass percentage of the hammer head material are: 1.0%C, 2.0%B, 26.0%Cr, 1.0%Si, 5.2%Mn, 0.5%Mo, 1.5%Cu, 0.80%Al, 0.90%Ti, 0.4% V, 0.25%Ca, 0.3%Ce, 0.2%Y, 0.18%N, 0.15Ba0.13%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 inoculant:

[0122] Crush ferrovanadium, ferro...

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Abstract

The invention discloses a bimetal composite high-tenacity, high-boron and high-chrome steel hammer and a preparing method thereof. Low-carbon bainite steel is adopted in a hammer handle, and high-tenacity, high-boron and high-chrome steel is adopted in a hammer head. A medium-frequency induction heater is arranged outside a sand box. During modeling, after impurities on the surface of the composite portion of the hammer handle are removed, the hammer handle is coated with an antioxidant and sleeved with a hammer head evanescent mold to be placed in a sand mold to be modeled, and modeling of a sprue and an ingate is carried out through an evanescent model. Model interior preheating is carried out on the hammer handle through medium-frequency induction, the preset temperature is reached, smelted hammer head molten steel is poured at the temperature of 1,560 DEG C-1,620 DEG C, a certain period of heat preservation is carried out after pouring, the box is opened for cleaning, and then thermal treatment is carried out. The technology is simple, the metallurgical bonding is achieved at an interface of the manufactured bimetal composite hammer head, the product quality is good, and safety is high. The defects that a hammer head produced in the prior art is short in service life and high in production cost are overcome. The service life is prolonged by more than three times compared with a high-manganese steel hammer head.

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-chromium steel hammer head 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. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/38C22C38/12C22C33/04B22D19/16
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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