CN104625021A - Method for casting and producing breaker hammer head - Google Patents

Abstract

The invention discloses a method for casting and producing a breaker hammer head, and relates to a technology for casting and producing the breaker hammer head. Firstly, low-alloy steel or normal cast steel is adopted to form an internal hammer handle in a casting manner, and the internal hammer handle is preheated and then cast to form a composite hammer handle; a high-chromium iron is cast to form the trimetal breaker hammer head; and on the basis of an original double-liquid double-metal composite method, a composite hammer handle portion is cast through a coating method, and then the high-chromium iron composite hammer handle and the hammer end portion are cast. Due to the fact that an external hammer handle is made of materials with good wear resistance, and the internal hammer handle is made of materials with good toughness, the composite hammer handle can bear material abrasion better; and the high wear resistance of the high-chromium iron can be fully developed, and the service life of the hammer head can be wholly prolonged.

Description

Grinder hammerhead method for casting production

 

Technical field

The invention belongs to casting technology field, be specifically related to a kind of grinder hammerhead method for casting production.

 

Background technology

In current crusher hammer head manufacturing technique, in the grinder hammerhead casting finished products made, flaw is more, and not only casting process is complicated, and production efficiency is low, and casting quality is poor, and percent defective is high.

 

Summary of the invention

In order to overcome the above-mentioned technical problem that prior art field exists, the object of the invention is to, provide a kind of grinder hammerhead method for casting production, the high-wearing feature of rich chromium cast iron is not fully exerted, and entirety improves the service life of tup.

Grinder hammerhead method for casting production provided by the invention, comprises the following steps:

(1) wooden model of inner hammer handle is processed as requested, during wooden model design, middle employing hollow out and round-corner transition, and also also should there be certain tapering at edge, then uses clay-bonded sand moulding and arranges rising head, cast low-alloy steel, temperature 1560 DEG C ~ 1580 DEG C;

(2) after cooling a period of time, shake out knockout also carries out surface finish process, be coated with last layer borax simultaneously, after treating that inner hammer handle is ready to, melting high-carbon low-alloy steel and rich chromium cast iron simultaneously, covering and casting compound hammer handle, carries out preheating by the inside hammer handle scribbling borax, and preheat temperature is 320 ~ 360 DEG C;

(3) inner hammer handle is positioned in the good sand mold of prior moulding, owing to leaving groove bottom sand mold, inner hammer handle can be well secured in sand mold, then the high-carbon low-alloy steel of 1560 DEG C ~ 1580 DEG C is poured into a mould, so high-carbon low-alloy steel is just coated for low-alloy steel, form three metal composite casting grinder hammerheads.

Grinder hammerhead method for casting production provided by the invention, its beneficial effect is, overcome prior art processing bulb diameter accuracy inadequate, operation is more, the problem that workload is large, and make casting quality better, operation is few, easy to operate.

 

Detailed description of the invention

Below in conjunction with an embodiment, grinder hammerhead method for casting production provided by the invention is described in detail.

Embodiment

The grinder hammerhead method for casting production of the present embodiment, comprises the following steps:

(1) wooden model of inner hammer handle is processed as requested, during wooden model design, middle employing hollow out and round-corner transition, and also also should there be certain tapering at edge, then uses clay-bonded sand moulding and arranges rising head, cast low-alloy steel, temperature 1570 DEG C;

(2) after cooling a period of time, shake out knockout also carries out surface finish process, is coated with last layer borax simultaneously, after treating that inner hammer handle is ready to, melting high-carbon low-alloy steel and rich chromium cast iron simultaneously, covering and casting compound hammer handle, the inside hammer handle scribbling borax is carried out preheating, and preheat temperature is 340 DEG C;

(3) inner hammer handle is positioned in the good sand mold of prior moulding, owing to leaving groove bottom sand mold, inner hammer handle can be well secured in sand mold, then the high-carbon low-alloy steel of 1570 DEG C is poured into a mould, so high-carbon low-alloy steel is just coated for low-alloy steel, form three metal composite casting grinder hammerheads.

Grinder hammerhead casting production process method, directly can cast out grinder hammerhead, and without the need to machining, operation is simple, and the finished diameter size cast out is accurate, effectively ensure that casting quality.

Claims (1)

1. a grinder hammerhead method for casting production, is characterized in that: said method comprising the steps of:

(1) wooden model of inner hammer handle is processed as requested, during wooden model design, middle employing hollow out and round-corner transition, and also also should there be certain tapering at edge, then uses clay-bonded sand moulding and arranges rising head, cast low-alloy steel, temperature 1560 DEG C ~ 1580 DEG C;

(2) after cooling a period of time, shake out knockout also carries out surface finish process, be coated with last layer borax simultaneously, after treating that inner hammer handle is ready to, melting high-carbon low-alloy steel and rich chromium cast iron simultaneously, covering and casting compound hammer handle, carries out preheating by the inside hammer handle scribbling borax, and preheat temperature is 320 ~ 360 DEG C;

(3) inner hammer handle is positioned in the good sand mold of prior moulding, owing to leaving groove bottom sand mold, inner hammer handle can be well secured in sand mold, then the high-carbon low-alloy steel of 1560 DEG C ~ 1580 DEG C is poured into a mould, so high-carbon low-alloy steel is just coated for low-alloy steel, form three metal composite casting grinder hammerheads.