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Grinder hammerhead and manufacturing method thereof

A manufacturing method and technology of a crusher, applied in the direction of grain processing, etc., can solve the problems of short service life, easy to break and fall off, and the hammer head cannot have both toughness and wear resistance, so as to improve the service life, not easy to break and fall off, and stable. The effect of improving sex and safety

Active Publication Date: 2012-03-14
SHANGHAI ZEMAG MINDAC MACHINERY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a high-toughness and high-abrasion-resistance crusher hammer head and its manufacturing method, which are used to solve the problem that the existing hammer head cannot have both toughness and wear resistance, and is easy to break and fall off, and has a short service life. defect

Method used

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  • Grinder hammerhead and manufacturing method thereof
  • Grinder hammerhead and manufacturing method thereof
  • Grinder hammerhead and manufacturing method thereof

Examples

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Effect test

manufacture Embodiment 1

[0045] a. Smelting 30kg of high-toughness carbon steel molten metal according to the formula of Example 1 in an intermediate frequency electric furnace, the furnace temperature is 1600°C, pouring it into the hammerhead cavity 22 from the pouring port 21 of the sand mold 2 at 0.3kg / s by the pouring device 1, The pouring temperature is 1550, and the speed of sand mold 2 is 300 rpm;

[0046] b. Melting 31 kg of wear-resistant alloy cast iron of the formula of Example 11 in an intermediate frequency electric furnace, the temperature of the furnace is 1500 ° C, and the pouring device 1 injects it from the sprue 21 of the sand mold 2 into the hammerhead cavity 22 at 0.4 kg / s. The pouring temperature is 1450°C, and the speed of sand mold 2 is 200 rpm;

[0047] c. After pouring is completed, keep the speed of sand mold 2 at 100 rpm, rotate for 15 minutes, stop and cool;

[0048] d. Raise the temperature to 920°C and keep it warm for 1 hour. After it comes out of the furnace, carry ou...

manufacture Embodiment 2

[0050] a. Smelting 40kg of high-toughness carbon steel molten metal of the formula of Example 4 in an intermediate frequency electric furnace, the furnace temperature is 1700°C, pouring it from the pouring port 21 of the sand mold 2 into the hammerhead cavity 22 by the pouring device 1 at 0.4kg / s, The pouring temperature is 1620, and the speed of sand mold 2 is 400 rpm;

[0051] b. smelting 28kg of wear-resistant alloy cast iron of the formula of Example 14 in an intermediate frequency electric furnace, the temperature of the furnace is 1600°C, and pouring it from the sprue 21 of the sand mold 2 into the hammerhead cavity 22 by the pouring device 1 at 0.5kg / s, The pouring temperature is 1550°C, and the speed of sand mold 2 is 300 rpm;

[0052] c. After pouring is completed, keep the speed of sand mold 2 at 250 rpm, rotate for 25 minutes, stop and cool;

[0053] d. Raise the temperature to 920°C and keep it warm for 2 hours, then carry out air-cooling treatment after being rel...

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Abstract

The invention discloses a crusher hammer with high toughness and wear resistance and a manufacturing method thereof. The hammer comprises a hammer handle and a hammer block; wherein, the hammer handle selects high toughness carbon steel and the hammer block selects wearing proof alloy cast iron. The manufacturing method provided by the invention comprises: the high toughness carbon steel is smelted into molten metal which is poured into a sand mold; the wearing proof alloy cast iron is smelted into molten metal which is poured into a sand mold; after completing pouring, the rotating speed of the sand mold is maintained at 100rpm-250rpm and the rotation lasts for 15-25min, and then the machine is stopped for cooling. By adopting the manufacturing method provided by the invention, the hammer handle of the crusher hammer has high toughness and the hammer block has high wear resistance; the joint of the hammer handle and the hammer block is not liable to break or fall off owing to the mixedly smelting of two metals, thus the service life of the hammer is prolonged. Under the same working condition, the service life of the hammer is 8-15 times longer than that of the common high manganese steel hammer, thus saving the maintenance cost of the equipment and greatly improving the stability and safety of the crusher equipment system.

Description

technical field [0001] The invention relates to the technical field of crushers, in particular to a hammer head of a hammer crusher and a manufacturing method thereof. Background technique [0002] The hammer crusher is widely used in mining, electric power, metallurgy and other industries. Its principle is to use the high-speed rotating hammer head to collide with the material falling from a high place to break the material. The hammer head is the key component and the most prone to wear and tear. The length of its life directly affects the efficiency and operation and maintenance costs of the entire crushing system. The longer the service life of the hammer head, the higher the stability of the crushing system and the lower the cost. Therefore, improving the service life of the hammer has become the technical competition point of the hammer crusher. Theoretically speaking, it is hoped that the hammer head has a high hardness, which is more wear-resistant, and at the same...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/04C22C37/10B02C13/28B22D13/00
Inventor 傅敏燕傅校英孔轶宏杨树芳冯尔念
Owner SHANGHAI ZEMAG MINDAC MACHINERY EQUIP
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