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Crusher hammerhead cast of steel bond hard alloy bar and casting method of vanishing mould thereof

A technology of steel-bonded cemented carbide and cemented carbide rods, which is applied in casting molding equipment, casting molds, casting mold components, etc., to achieve the effects of low cost, not easy to fall off, and light weight

Inactive Publication Date: 2010-06-02
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be said that the material of the ideal hammer head should be both hard and tough, but it is difficult for a single material to meet this requirement

Method used

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  • Crusher hammerhead cast of steel bond hard alloy bar and casting method of vanishing mould thereof
  • Crusher hammerhead cast of steel bond hard alloy bar and casting method of vanishing mould thereof
  • Crusher hammerhead cast of steel bond hard alloy bar and casting method of vanishing mould thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: produce the tup that unit weight is 800N, and this tup adopts low-alloy steel casting to form, inserts and casts steel bonded carbide rod in casting process; Wherein, the mass fraction of the chemical composition of low-alloy steel is: C 0.24%, Si 1.32%, S0.028%, P 0.032%, Mn 0.82%, Cr 1.67%, Mo 0.42%, V 0.05%, Ti 0.05%, RE 0.08%, Fe 95.29%; The casting material is GT35 steel-bonded hard alloy rod, which is a purchased part with a diameter of 2.5mm. The mass fraction of its chemical composition is: TiC 31%, Cr 3%, Mo 3%, C 0.9%, Fe 62.10%, The performance is: density / t.m -3 6.4~6.6, bending strength / Mpa 1380~1760, impact toughness / J.cm -2 39-78. Hardness (HRC): 36-45 in the annealed state and 66-69 in the quenched and tempered state.

[0016] The casting method of hammer head of the present invention, this casting method comprises the production process of low-alloy steel and lost foam casting process and heat treatment process, wherein, the production...

Embodiment 2

[0017]Embodiment 2: the production unit weight is the tup of 500N, and this tup adopts low-alloy steel casting to form, and casts steel-bonded carbide rod in casting process; Wherein, the mass fraction of the chemical composition of low-alloy steel is: C 0.267%, Si 1.44%, S 0.032%, P 0.035%, Mn 1.02%, Cr 1.89%, Mo 0.46%, V 0.05%, Ti 0.065%, RE 0.115%, Fe 94.626%; The material is GT35 steel-bonded carbide rod, which is an outsourced part with a diameter of 2.5mm. The mass fraction of its chemical composition is: TiC 31%, Cr 3%, Mo 3%, C 0.9%, Fe 62.10%. For: density / t.m -3 6.4~6.6, bending strength / Mpa 1380~1760, impact toughness / J.cm -2 39-78. Hardness (HRC): 36-45 in the annealed state and 66-69 in the quenched and tempered state.

[0018] The casting method of hammer head of the present invention, this casting method comprises the production process of low-alloy steel and lost foam casting process and heat treatment process, wherein, the production process of low-alloy st...

Embodiment 3

[0019] Embodiment 3: produce the tup that single weight is 200N, this tup adopts low-alloy steel casting to form, inserts and casts steel bonded carbide rod in casting process; Wherein, the mass fraction of the chemical composition of low-alloy steel is: C 0.295%, Si 1.56%, S 0.035%, P 0.038%, Mn 1.22%, Cr 2.10%, Mo 0.51%, V 0.08%, Ti 0.07%, RE 0.15%, Fe 93.942%; The material is GT35 steel-bonded hard alloy rod, which is a purchased part with a diameter of 2mm. The mass fraction of its chemical composition is: TiC 31%, Cr 3%, Mo 3%, C 0.9%, Fe 62.10%, and its performance is : Density / t.m -3 6.4~6.6, bending strength / Mpa 1380~1760, impact toughness / J.cm -2 39-78. Hardness (HRC): 36-45 in the annealed state and 66-69 in the quenched and tempered state.

[0020] The casting method of hammer head of the present invention, this casting method comprises the production process of low-alloy steel and lost foam casting process and heat treatment process, wherein, the production pro...

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Abstract

The invention discloses a crusher hammerhead cast of a steel bond hard alloy bar and a casting method of a vanishing mould thereof. The hammerhead is cast by low-alloy steel and is cast with the steel bond hard alloy bar in the casting process; the low-alloy steel contains the following chemical components by weight percent: 0.24 wt% to 0.295 wt% of C, 1.32 wt% to 1.56 wt% of Si, 0.028 wt% to 0.035 wt% of S, 0.032 wt% to 0.038 wt% of P, 0.82 wt% to 1.22 wt% of Mn, 1.67 wt% to 2.10 wt% of Cr, 0.42 wt% to 0.51 wt% of Mo, 0.05 wt% to 0.08 wt% of V, 0.05 wt% to 0.07 wt% of Ti, 0.08 wt% to 0.15 wt% of RE and 93.942 wt% to 95.29 wt% of Fe. The casting method of the hammerhead comprises the production process of the low-alloy steel, and the casting process and the thermal treatment process of the vanishing mould. The hammerhead product cast with the steel bond hard alloy bar has the advantages of good strength and toughness and high rigidity and abrasive resistance, is suitable for various working conditions, and can crush objects with different hardness.

Description

technical field [0001] The invention relates to a hammer head of a crusher and a casting method thereof, in particular to a hammer head of a crusher in which a steel-bonded hard alloy rod is inlaid and a casting method thereof. Background technique [0002] The hammer crusher has a large crushing ratio, low energy consumption, and uniform discharge, which is suitable for crushing various materials. However, due to the rapid wear of the hammer head, its application is limited. This problem has become a miserable worry for domestic crushing equipment manufacturers and application manufacturers, and it is also a problem that needs to be solved urgently. [0003] At present, there are many kinds of materials used to manufacture hammer heads, mainly including ordinary high manganese steel, medium and low alloy steel, high chromium cast iron, high chromium cast iron for hammer heads and carbon steel for hammer handles. Ordinary high manganese steel is suitable for use under abra...

Claims

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Application Information

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IPC IPC(8): C22C38/34C22C38/28C22C38/36B02C13/28B22C9/04B22C9/22C21D9/00
Inventor 卓荣明侯志伟
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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