Liquid-state bimetal composite hammer for crusher and manufacturing method thereof

A composite hammer and bimetal technology, applied in grain processing and other directions, can solve the problems of difficult on-site operation, difficult and stable quality, and inability to apply, and achieve the effect of avoiding bubbles and inclusions, reasonable operation and prolonging service life.

Inactive Publication Date: 2011-11-23
朝阳力宝重工集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this process is more difficult to operate on site, and the quality is more difficult to stabilize
Although there are many reports, they cannot be applied in large-scale production. It is far from mass production of hammer heads with high quality and low price.

Method used

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  • Liquid-state bimetal composite hammer for crusher and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Liaoning Jianping Jianlong Mining Concentrator 1200 horizontal hammer crusher, the weight of the hammer head is 10kg. Selected bimetallic composite tup of the present invention, wherein used bimetallic material composition is as follows (wt%):

[0038] Hammer part: C Si Mn Cr Mo Ni Cu P S

[0039] 2.85 0.46 0.68 16.58 0.50 0.56 0.43 0.043 0.038

[0040] Hammer part: C Si Mn P S

[0041] 0.42 0.51 0.65 0.036 0.032

[0042] Through practical comparison, when the hammer head made of high manganese steel is used, it needs to be replaced after 8 hours of use. When the hammer head is forged with railway steel, it needs to be replaced after 12 hours of use. However, when the double metal composite hammer head of the present invention is used, it can work continuously 36 hours.

Embodiment 2

[0044] Inner Mongolia Ulanhot Hongguang Quarry 1400 horizontal hammer crusher, hammer head weight 23kg. Because this tup is used for a long time, so the hammer handle part requires a certain strength, the bimetallic composite tup of the present invention has used the following composition (wt%):

[0045] Hammer part: C Si Mn Cr Mo Ni Cu P S

[0046] 2.96 0.51 0.72 15.85 0.52 0.60 0.42 0.041 0.032

[0047] Hammer handle: C Si Mn Cr Mo P S

[0048] 0.48 0.51 0.96 1.18 0.23 0.036 0.025

[0049] Through practical comparison, the high manganese steel material has to be replaced within 24 hours at most, and the average life of the hammerheads of the present invention (2 groups of 16) can reach 102 hours.

Embodiment 3

[0051] Inner Mongolia Hailaer Fuqiang Crushing Plant, box-type 1400 hammer crusher, hammer head weight 28kg. It should be emphasized that the feeding methods of the box-type hammer crusher and the horizontal hammer crusher are different, so the wear parts are different. The horizontal hammer crusher basically only wears the hammer head part, while the box-type hammer crusher wears the part of the hammer head. Simultaneously also more serious to hammer handle wear and tear, bimetallic composite tup of the present invention has adopted following composition (wt%):

[0052] Hammer part: C Si Mn Cr Mo Ni Cu P S

[0053] 3.12 0.50 0.80 17.02 1.51 0.60 0.38 0.042 0.038

[0054] Hammer part: C Si Mn Cr Mo Ni P S

[0055] 0.52 0.48 0.66 3.83 0.50 0.50 0.035 0.032

[0056] Through practical comparison, the high manganese steel hammer needs to be replaced after working for 16 hours, but the double metal composite hammer of the present invention can work continuously for 52 hours.

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Abstract

The present invention discloses a bimetal composite hammer. The hammer comprises a head and a handle, wherein the head is made of an alloying high-chromium cast iron containing 15 to 17 weight percent of Cr, and the handle is made of carbon steel containing no more than 5 weight percent of Cr; after the bimetal composite hammer is cast, the hammer is subjected to heat preservation at the temperature of 950+ / -20 DEG C in a thermal treatment furnace for 3 to 5 hours, is subjected to air cooling and normalizing, and is tempered in the air at the temperature of between 250+ / -20 DEG C for 3 to 5 hours. Furthermore, the invention also discloses a method for manufacturing the bimetal composite hammer. Two kinds of steel can be metallurgically combined excellently by effectively controlling the pouring temperatures, pouring speeds and intervals of two kinds of molten steel; the molten steel is subjected to reasonable deoxidizing and degassing operation, and bubbles and impurities of joint parts are avoided, so the strength and toughness of the joint parts are improved; a phenomenon that the handle and the head are separated or destroyed cannot occur, and the service life of the hammer is remarkably prolonged by 200 to 400 percent compared with that of the conventional hammer.

Description

technical field [0001] The invention belongs to the application field of hammers for crushers, and in particular relates to a bimetal composite hammer and a manufacturing method thereof. Background technique [0002] Hammer heads are widely used in crushers and are one of the most consumed wear-resistant materials in the world. The hammer head is composed of the hammer handle and the hammer head. The head directly collides with the material to be crushed and wears, so it is required to have high hardness and wear resistance; the hammer handle is connected to the transmission shaft and bears a huge impact. Therefore, Sufficient toughness and strength are required. Of course, under some working conditions, the hammer handle is also subject to wear, and at this time the hammer handle is also required to have sufficient wear resistance. Except for a small number of forgings, most of the hammer heads are produced by casting. Due to the different working conditions and performa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B02C13/26C21D5/00C21D1/28C22C37/06C22C37/10
Inventor 康新宋宝珠
Owner 朝阳力宝重工集团有限公司
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