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A method for preparing a composite jaw plate of a jaw crusher

A jaw crusher and jaw plate technology, applied in heat exchange equipment, rotors, cylinders, etc., can solve problems such as wear, poor surface wear resistance, uneven wear of jaw plates, etc.

Active Publication Date: 2017-03-22
GUANGDONG INST OF NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the existing jaw plates face two main problems during use: one is that the surface wear resistance is poor under strong impact wear conditions; the other problem is that the jaw plates wear unevenly, usually at the two ends of the jaw plate length Heavy wear, less wear in the middle area

Method used

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  • A method for preparing a composite jaw plate of a jaw crusher
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  • A method for preparing a composite jaw plate of a jaw crusher

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preparation example Construction

[0023] The preparation method of the jaw crusher composite jaw plate of the present invention comprises the following steps:

[0024] 1) Prepare the casting mold; when the prepared casting mold is used for pouring high manganese steel liquid, the casting mold is made of washed olivine sand with a mud content of less than 0.2% and used as a binder, and the addition amount is 4- 5% water glass mixed with CO 2 Hardened, and the surface of the mold cavity is coated with magnesia powder quick-drying paint; when the prepared mold is used for pouring molten alloy steel, the mold is made of water-washed quartz with a mud content of less than 0.2%. The sand is mixed with water glass used as a binder and added in an amount of 4-5%, and then subjected to CO 2 Hardened, and the cavity surface of the mold is coated with zircon powder quick-drying paint;

[0025] 2) Place the profiling reinforcement containing ceramic particles at the position corresponding to the wear area of ​​the jaw p...

Embodiment 1

[0029] The base material is Mn13 type high manganese steel, the composition is (percentage by weight) C: 1.2%, Cr: 1.8%, Si: 0.6%, Mn: 12%, S≤0.04%, P≤0.04%, and the rest is Fe; Type preparation: use washed olivine sand with a mud content of 0.15%; water glass as a binder with an addition of 4.5%; CO 2 Hardening; the surface of the mold cavity is painted with magnesia powder quick-drying paint. Preparation of Contoured Reinforcement Containing Ceramic Particles: Al 2 o 3 -ZrO 2 The composite ceramic particles are mixed with the binder and placed in the mold, and solidified into a profiling shape that is resistant to the erosion of molten metal and has three-dimensional intercommunication and multi-dimensionality between the ceramic particles and the shape of the jaw plate. The profiling reinforcement containing ceramic particles is placed in the corresponding position of the wear area of ​​the jaw plate in the mold. The final wear surface of the ceramics does not exceed the...

Embodiment 2

[0031] The base material is Mn18 type high manganese steel, the composition is (percentage by weight) C: 1.25%, Cr: 2.1%, Si: 0.6%, Mn: 18%, S≤0.04%, P≤0.04%, and the rest is Fe; Type preparation: use washed olivine sand with a mud content of 0.15%; water glass as a binder with an addition of 4.5%; CO 2 Hardening; the surface of the mold cavity is painted with magnesia powder quick-drying paint. Preparation of Contoured Reinforcement Containing Ceramic Particles: Al 2 o 3 -ZrO 2 The composite ceramic particles are mixed with the binder and placed in the mold, and solidified into a profiling shape that is resistant to the erosion of molten metal and has three-dimensional intercommunication and multi-dimensionality between the ceramic particles and the shape of the jaw plate. The profiling reinforcement containing ceramic particles is placed in the corresponding position of the wear area of ​​the jaw plate in the mold. The final wear surface of the ceramics does not exceed th...

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Abstract

The invention provides a preparation method for a composite jaw plate of a jaw crusher. The preparation method comprises the following steps: (1) preparing a casting mould; (2) placing a profiling reinforcement body containing ceramic particles at the position, corresponding to a worn area of a jaw plate, of the casting mould; (3) pouring molten high manganese steel or alloy steel into the casting mould, cleaning the solidified and cooled molten steel, and removing a casting head and burrs to obtain a composite jaw plate, wherein the matrix of the jaw plate is made of high manganese steel or alloy steel, and ceramic particles are composited in dental parts of a seriously impacted and worn area of the jaw plate; (4) performing heat treatment on the composite jaw plate. In order to overcome the defects of low wear resistance and non-uniform wear in the conventional jaw plate made of a single material, the composite jaw plate is prepared; the ceramic particles are composited in the dental parts of the seriously impacted and worn area of the jaw plate, and the substrate of the composite jaw plate is made of excellent-toughness high manganese steel or alloy steel, and subjected to the heat treatment, so that the coordination and unity of high toughness and wear resistance of the jaw plate can be realized, and the uniform wear of the jaw plate can be guaranteed; the wear resistance of the composite jaw plate is 2-4 times of that of a single substrate.

Description

technical field [0001] The invention relates to the technical field of jaw crushers, in particular to a method for preparing a composite jaw plate of a jaw crusher. Background technique [0002] Jaw crushers are widely used in the fields of building materials, mining, and metallurgy to crush stones. The jaw plate is a key vulnerable part of the jaw crusher, which can withstand strong impact and wear. The materials and preparation of the existing jaw plates are usually made of high manganese steel or alloy steel. Whole preparation. Therefore, the existing jaw plates face two main problems during use: one is that the surface wear resistance is poor under strong impact wear conditions; the other problem is that the jaw plates wear unevenly, usually at the two ends of the jaw plate length Heavy wear and less wear in the middle area. Therefore, the problems of wear resistance and uniformity of wear need to be solved for existing jaw plates. Contents of the invention [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D19/00
CPCB22D19/085
Inventor 王娟郑开宏王秀连徐静周楠
Owner GUANGDONG INST OF NEW MATERIALS
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