Inserted tooth hammer of crushing machine and preparation method thereof
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A crusher and hammer technology, applied in high-tech engineering materials and their application fields, can solve problems such as difficulty in exerting advantages, and achieve the effects of reducing the probability of falling off, high wear resistance, and improving efficiency
Inactive Publication Date: 2012-07-25
CHINA UNIV OF GEOSCIENCES (BEIJING)
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Therefore, the two-liquid composite method is not easy to take advantage of the hammer head production
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preparation example Construction
[0027]The invention proposes a novel hammer head of a crusher and a preparation method thereof, which is characterized in that the toothed hammer head is composed of two parts, a ball tooth and a hammer head base, and is formed by high-temperature inlay casting. The material of the button is a composite cermet, including one or more of WC, TiN or TiC-based composite cermet; the material of the hammer base is medium-low carbon steel with high hardness and strength and good toughness or Alloy steel; the structure of the button contains 15 to 30 buttons, the button is a cylinder with a spherical cap, embedded in the front end of the hammer base, the cylinder is buried in the steel body, the spherical cap is exposed outside the steel, and There is a distance of 10-30mm between the button teeth. The preparation method comprises the following process steps and contents:
[0028] (1) Prefabrication of button teeth:
[0029] 1) Weighing: Weigh the matrix powder, metal binder, grain ...
Embodiment 1
[0047] The manufacturing method and technological process of the novel crusher hammer head of the embodiment of the present invention are as follows:
[0048] Step 1. Preparation of button teeth:
[0049] 1) Weighing; weigh each reagent by mass fraction of 79% submicron WC powder, 10% Mo powder, 1% VC, 5% Mo-plated SiC nano-whiskers, and 5% auxiliary binder .
[0050] 2) Mixing: Add the weighed raw material WC powder, metal binder powder, grain inhibitor powder and auxiliary binder into the high-energy stirring ball mill tank, and add 10 times the mass of WC grinding balls and 5 times the mass of Anhydrous ethanol solvent, stirring and ball milling for 48 hours. Then add the weighed toughening agent and ball mill for another 20 minutes.
[0051] 3) Drying: In a vacuum drying oven, dry the finely mixed slurry for 30 hours at 40° C. and a vacuum degree of −0.33 Pa.
[0052] 4) Grinding and sieving: the dried powder is ground with an agate mortar, and sieved with a sieve with...
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Abstract
The invention relates to an inserted tooth hammer of a crushing machine and a preparation method thereof and belongs to the fields of high technology engineering materials and application thereof. The inserted tooth hammer of the crushing machine consists of ball teeth and a hammer base body and is formed by virtue of high temperature imbedding, wherein the ball teeth are novel high-hardness high-strength anti-abrasive composite metal ceramic comprising one or more of WC, TiN or TiC based composite metal ceramic; the hammer base body is middle-low carbon steel or alloy steel with high hardness and strength and good toughness; the inserted tooth hammer of the crushing machine structurally comprises multiple cylindrical ball teeth with spherical crowns, the multiple cylindrical ball teeth are imbedded at the front end of the hammer base body, a cylinder is buried in a steel body, the spherical crowns are exposed out of the steel body, and a distance is reserved between the ball teeth. The preparation method of the inserted tooth hammer of the crushing machine successively comprises the following steps of: pre-preparing composite metal ceramic ball teeth; smelting hammer base body alloy steel; imbedding the ball teeth; and demoulding. The inserted tooth hammer of the crushing machine has the characteristics of good abrasive resistance, long service life, raw material economization and low cost.
Description
technical field [0001] The invention relates to a crusher insert hammer head and a preparation method thereof, which belong to the field of high-tech engineering materials and their applications. Background technique [0002] Hammer crusher is a crushing machine widely used in cement, ceramics, mining, electric power and other industries. Because the hammer head is mainly in contact with the ore, it not only bears the friction and wear of the ore, but also bears a large impact load, so it becomes the most easily worn part of the crusher. According to relevant data statistics, the direct economic loss caused by the crusher hammer reaches tens of millions of yuan every year. At the same time, the indirect economic loss caused by equipment damage, shutdown, and production stoppage is even greater. [0003] In order to improve the wear resistance of the crusher hammer head, domestic and foreign scholars have conducted a lot of research: one method is to improve the wear resista...
Claims
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