CN2357826Y

CN2357826Y - Hammer head

Info

Publication number: CN2357826Y
Application number: CN 99222815
Authority: CN
Inventors: 孙伟成
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-02-09
Filing date: 1999-02-09
Publication date: 2000-01-12
Anticipated expiration: 2009-02-09

Abstract

The utility model relates to a mixed hammer head, which comprises a body with a shaft sleeve body and a work end, wherein, grits which are covered by a basal body and have high hardness and fire resistance are evenly distributed in the basal body of the work end of the front part of the body which is formed by casting once. The utility model fundamentally solves the problem of no wear resistance existing in the prior art. The hammer head has the advantages of high hardness and strength, good toughness, wear resistance and low manufacture cost, obviously enhancing the service life, reducing the maintenance load and the labor strength, saving the fun, and effectively enhancing the utilization rate of equipment and the quality of the broken material.

Description

Mix the body tup

The utility model relate to a kind of be used for plate-hammer crusher mix the body tup.It is all kinds of ores of rapping, stone or coal etc. continuously.

At present, general plate-hammer crusher is in the continuous rapping process to brittle materials such as lime stone, iron ore, quartz or coals, and tup is the vulnerable part of broken material.Existing tup great majority are to adopt the raw material of identical material to make, as potassium steel, carbon steel or low alloy steel etc.Because of in shattering process, tup runs up and can produce the gravity cutting abrasion, so require it can bear the impulsive force that runs up, has toughness and does not rupture, and very high hardness and wearability are arranged.But the hardness and the wearability of general grinder hammerhead all do not satisfy requirement far away.The tup of for example broken clinker or coal, general service life was less than one month: the high stone classes of hardness such as broken cobblestone, basalt, only be 20-32 hour its service life.Because of quick abrasion; tup is changed in frequent shutdown; so not only increase labor intensity of operating personnel; expend fund, and influence the normal operation of equipment, reduce production efficiency; tup quick abrasion particularly; cause between tup and the liner plate gap to increase, broken raw meal particle size change the quality of material easily thereby influence is broken.For this reason, the someone attempts to work hard on change tup material, and as add some alloying element in potassium steel, it is not too obvious that improve service life, and cost sharply rises.The people is also arranged at tup direct casting edge steel carbide alloy or with the tup of composite construction, as adopt the high-chromium white cast iron of high rigidity to make tup, No. 45 steel with good toughness are made hammer handle, and the casting edge is integral, or with screw high-chromium white cast iron and No. 45 steel hammer handles is linked together.But because the matching of two kinds of materials is bad, obscission takes place easily, therefore, above-mentioned composite construction fails to apply.

The purpose of this utility model provides a specific admixture body tup, it has fundamentally solved the not wear-resisting problem that prior art exists, this tup not only has very high hardness, intensity, good toughness, significantly improve wear-resisting and service life, and low cost of manufacture, reduces maintenance load and labour intensity, the saving fund effectively improves the utilization rate of equipment and installations and the material quality that minced.

The purpose of this utility model is achieved in that this device comprises the body that has sleeve body and working end, the body of one-step casting moulding wherein, and in the anterior working end matrix, the high rigidity, the high fire-resistant sand grains that evenly distribute and coated by matrix.

Because the utility model adopts the one-step casting moulding process, make whole body and sleeve body and working end, so body and its working end case accident can not take place because of running up.In the matrix of working end, evenly distribution is made sand grains not only overcome fragility and keeps and the same toughness of matrix, and significantly improve hardness, intensity and the wearability of working end matrix by the sand grains that matrix coats in addition.The shared volume of sand grains accounts for the 15-30% of matrix, so it reduces manufacturing cost.This specific admixture body tup proves that through actual detected be more than 4 times of similar tup its service life.Because of significantly improve service life, so reduce maintenance load and labour intensity, the saving fund effectively improves utilization rate of equipment and installations and the quality of the material that minced.Therefore, the utility model is very easily applied.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is a kind of concrete structure schematic diagram of the utility model.

Describe concrete structure of the present utility model in detail according to Fig. 1.The specification shape of tup can be determined according to actual instructions for use.It comprises body 1, sleeve body 3, working end 2 three parts.It is integral body with matrix one-shot forming of the same race that this three part adopts casting technique, and its matrix can be used potassium steel, carbon steel or low alloy steel.In the matrix of working end, high rigidity, high fire-resistant sand grains that even distribution is coated by matrix.It is that 2000 ℃, Mohs' hardness are that electrolysis corundum or the magnesia of 7-9 is made that these sand grains adopt refractoriness, and granularity is advisable to be no more than 20 orders, and sand-grain volume accounts for the 15-30% of matrix.During casting, sand grains is coated, is distributed in the matrix of working end 3 by molten steel equably, and the steel, the sand that form special construction mix body.

The installation of this tup, use and existing similar tup unanimity.

Claims

1, a specific admixture body tup comprises the body that has sleeve body and working end, it is characterized in that the body of one-step casting moulding, in the anterior working end matrix, and high rigidity, high fire-resistant sand grains that even distribution is coated by matrix.

2, the body tup that mixes according to claim 1 is characterized in that the grit size that used electrolysis corundum or magnesia are made is no more than 20 orders.

3, the body tup that mixes according to claim 1 is characterized in that used sand grains refractoriness is not less than 2000 ℃, and hardness is Mohs 7-9.