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Manufacturing method for alloy hammer head

A hammer and alloy technology, applied in the field of the preparation of alloy hammers, can solve the problems of workpiece influence, less research on corrosion resistance, corrosion, etc., to avoid shrinkage, improve corrosion resistance, product hardness and resistance to corrosion. Good grinding effect

Inactive Publication Date: 2018-12-07
江苏双星特钢有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the continuous development of modern alloy technology, the hardness and wear resistance of the hammer head have been greatly improved. However, there are few studies on its corrosion resistance. If the hammer head has corrosion and other defects, it is easy to damage the processed workpiece. Cause a certain impact, especially for workpieces with high precision requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for preparing an alloy hammer head, comprising the following steps:

[0026] (1) Batching: it is made up of the raw material of following percentage by weight:

[0027] Rare earth lanthanum: 0.1%, Mn: 1%, Mo: 1%, Cu: 1%, Ni: 1%, Se: 1%, P: 1%, and the rest is iron;

[0028] (2) Preparation of lost foam: Polystyrene plastic foam material is used to prepare lost foam. The shape and size of the film are set according to production needs. The lost foam is placed in a vacuum sand box, filled with fused ceramsite, and then coated, Install the sprue cup, vacuumize, the negative pressure is 0.7Mpa, and wait for pouring;

[0029] (3) Pouring molding: mix the above-mentioned ingredients, put them into an electric furnace for melting, then pouring and molding, and cool to normal temperature to obtain blanks;

[0030] (4) Heat treatment: air-cool and quench the above blank at 900°C, lower the temperature at a rate of 15°C / min until the temperature is 100°C, and keep it w...

Embodiment 2

[0041] A method for preparing an alloy hammer head, comprising the following steps:

[0042] (1) Batching: it is made up of the raw material of following percentage by weight:

[0043] Rare earth lanthanum: 0.03%, Mn: 0.8%, Mo: 0.8%, Cu: 0.8%, Ni: 0.8%, Se: 0.8%, P: 0.8%, and the rest is iron;

[0044] (2) Preparation of lost foam: Polystyrene plastic foam material is used to prepare lost foam. The shape and size of the film are set according to production needs. The lost foam is placed in a vacuum sand box, filled with fused ceramsite, and then coated, Install the sprue cup, vacuumize, the negative pressure is 0.5Mpa, and wait for pouring;

[0045] (3) Pouring molding: mix the above-mentioned ingredients, put them into an electric furnace for melting, then pouring and molding, and cool to normal temperature to obtain blanks;

[0046] (4) Heat treatment: air-cool and quench the above blank at 800°C, lower the temperature at a rate of 10°C / min until the temperature is 90°C, a...

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Abstract

The invention discloses a manufacturing method for an alloy hammer head. The manufacturing method comprises the following steps of: preparing materials, preparing lost foam, casting and forming, thermal treatment, and anti-corrosion treatment. The hammer head product manufactured by the manufacturing method is reasonable in process, and phenomena such as hole shrinkage, cracks and crystalline penetration of the hammer head product are effectively avoided, and therefore, the hammer head is high in internal structure compactness, and is good in product hardness and wear resistance.

Description

technical field [0001] The invention belongs to the field of alloy materials, and in particular relates to a method for preparing an alloy hammer head. Background technique [0002] Crusher hammer, the accurate definition should be hammer crusher hammer, the hammer is one of the core components of the hammer crusher, arranged on the hammer shaft of the rotor of the crusher, the hammer directly strikes when the crusher is running at high speed The material is finally broken into a suitable material particle size; [0003] Crusher hammers on the market can be divided into two types according to the manufacturing process: casting and forging, but their wear resistance is different. Due to the broken material, the head needs good wear resistance and the handle needs enough toughness. Usually, alloy steel, high manganese steel, cast steel and high chromium cast iron bimetallic composite materials are used for one-time molding by forging or casting. The corresponding heat treatm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/18C21D6/00C21D9/00B22C9/04C22C38/04C22C38/08C22C38/12C22C38/16C09D183/05C09D5/08C09D7/63C09D7/61
CPCC21D1/18B22C9/046C08K3/28C08K5/098C09D5/08C09D7/61C09D7/63C09D183/04C21D6/001C21D6/005C21D9/0068C22C38/002C22C38/005C22C38/04C22C38/08C22C38/12C22C38/16
Inventor 顾开明顾红军顾鹏孙文岗葛宏明
Owner 江苏双星特钢有限公司
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