Device and method for casting composite hammer head

Abstract

The invention discloses a device for casting a compound hammerhead and a method for casting the same, wherein the device comprises a casting box consisting of an upper mould plate and a lower mould plate through compounding, two sides of the casting box are provided with box clamps, a die cavity of which the shape is fit close with that of the hammerhead is arranged in the casting box, the top end of the die cavity is provided with a riser head, the left side and the right side of the die cavity are provided with a pouring channel I and a pouring channel II respectively, and opening parts of the other ends of the pouring channel I and the pouring channel II are arranged on the top of the casting box. The method comprises the following steps: pouring molten metal I into the pouring channel I so that the molten metal I flows into the bottom of the die cavity under the action of gravity; and when the molten metal I begins to pre-harden, pouring molten metal II into the pouring channel II so that the molten metal II flows onto the molten metal I in the die cavity under the action of gravity, and then adding a heat-generating agent into the die cavity so that the molten metal I and the molten metal II are fused integrally to form the hammerhead. The method uses two metals to cast the hammerhead through thermal compound, so on the basis of keeping the original toughness, the wearing resistance of the hammerhead is increased, the crack resistance of a hammer handle is reliable, the production cost is greatly reduced, the service life of the hammerhead is prolonged, and the mechanical maintenance rate is low.

Description

technical field [0001] The invention relates to a composite hammerhead casting device and a composite hammerhead casting method. Background technique [0002] The hammer head is widely used in various crushers and is the main wear-resistant part of the crusher. The cost of the hammer head and its wear resistance are directly related to the production cost of the crusher manufacturer. The casting method of the traditional hammer head is a single casting of a single metal liquid, which not only has poor wear resistance, but also has poor crack resistance reliability of the hammer handle, and the cost of producing this kind of hammer head is high. [0003] The existing composite hammer head, the so-called composite hammer head is a hammer head connected by a variety of metal materials by mechanical assembly, bonding assembly or metallurgical compounding. The mechanically assembled hammer head has poor toughness, low impact resistance, and sticky The bonding surface of the asse...

AI Technical Summary

Problems solved by technology

The casting method of the traditional hammer head is a single casting of a single metal liquid, which not only has poor wear resistance, but also has poor crack resistance reliability of the hammer handle, and the cost of producing this kind of hammer head is high. This kind of hammer head is no longer suitable for use on crushers.

[0003] The existing composite hammer head, the so-called composite hammer head is a hammer head connected by a variety of metal materials by mechanical assembly, bonding assembly or metallurgical compounding. The mechanically assembled hammer head has poor toughness, low impact resistance, and sticky The bonding surface of the assembled hammer head has poor mechanical properties and is easy to break during use

In order to combine the above-mentioned casting method to produce the existing hammer head, an additional cavity needs to be added, which increases the cost of the device, and the casting structure inside the device is also unreasonable

Chinese patent CN91218917.7 discloses a bimetallic composite hammer head of a hammer crusher, which consists of upper and lower parts, which are connected by notches and reinforced with adhesives. The impact capacity is low, and the notch structure is easily broken under the impact of external force, causing accidents such as flying out of hammer fragments

The frequency of use of the hammer head is high, and the working part of the hammer head is broken and cannot be used. Frequent replacement of the hammer head will increase the production cost of the manufacturer and reduce the production efficiency.

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