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Liquid forging die and method for crusher jaw plates

A technology of liquid die forging and crushing machine, which is applied in the field of liquid die forging dies, and can solve the problems of low production efficiency of bimetallic composite jaw plates, inability to form a large-thick wear-resistant layer, and weak combination of ingots and substrates. Achieve the effect of eradicating waste sand pollution, avoiding welding failure, and smooth appearance

Inactive Publication Date: 2016-06-22
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Jaw plates manufactured by laser cladding (201310325530.9) can form a 0.6-1.8mm thick wear-resistant layer on the surface of the jaw plate body, but cannot form a large-thick wear-resistant layer, and the preparation efficiency is low, so the application is limited
[0007] In order to solve the problems of coarse internal structure, short service life and easy breakage of single-material jaw plates in gravity casting in the prior art, as well as the low production efficiency of bimetallic composite jaw plates and the weak combination of ingots and substrates, this paper is proposed. invention

Method used

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  • Liquid forging die and method for crusher jaw plates
  • Liquid forging die and method for crusher jaw plates
  • Liquid forging die and method for crusher jaw plates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Embodiment 1, the liquid die forging of high manganese steel jaw plate

[0068] A liquid die forging die for a jaw plate of a crusher, comprising an upper punch 1, a lower die 2, a lower punch 4, an upper ejector rod 8 and a lower ejector rod 7; the lower die 2 has a lower die cavity inside.

[0069] The upper pressing head 1 is installed on the pressurizing equipment, and the shape and size of its lower end surface are adapted to the shape and size of the working surface of the jaw plate, and can be inserted into the lower mold cavity to move up and down to provide downward pressure for The working surface of the jaw plate is formed, and anti-wear teeth matching the lower end surface of the upper pressing head 1 are formed on the working surface of the jaw plate.

[0070] The unilateral movement gap between the two end sidewalls of the upper pressing head 1 and the two end sidewalls in the lower mold cavity is 0.1 mm.

[0071] The upper indenter 1 is made of hot work ...

Embodiment 2

[0090] Embodiment 2, a kind of high chromium cast iron jaw plate liquid die forging

[0091] A liquid die forging die for a jaw plate of a crusher, comprising an upper punch 1, a lower die 2, a lower punch 4, an upper ejector rod 8 and a lower ejector rod 7; the lower die 2 has a lower die cavity inside.

[0092] The upper pressing head 1 is installed on the pressurizing equipment, and the shape and size of its lower end surface are adapted to the shape and size of the working surface of the jaw plate, and can be inserted into the lower mold cavity to move up and down to provide downward pressure for The working surface of the jaw plate is formed, and anti-wear teeth matching the lower end surface of the upper pressing head 1 are formed on the working surface of the jaw plate.

[0093] On the basis of the above solution, the unilateral movement gap between the two end side walls of the upper indenter 1 and the two end side walls in the lower mold cavity is 0.18mm.

[0094]The...

Embodiment 3

[0113] Embodiment 3, low alloy steel jaw plate

[0114] A liquid die forging die for a jaw plate of a crusher, comprising an upper punch 1, a lower die 2, a lower punch 4, an upper ejector rod 8 and a lower ejector rod 7; the lower die 2 has a lower die cavity inside.

[0115] The upper pressing head 1 is installed on the pressurizing equipment, and the shape and size of its lower end surface are adapted to the shape and size of the working surface of the jaw plate, and can be inserted into the lower mold cavity to move up and down to provide downward pressure for The working surface of the jaw plate is formed, and anti-wear teeth matching the lower end surface of the upper pressing head 1 are formed on the working surface of the jaw plate.

[0116] The unilateral movement gap between the two end sidewalls of the upper pressing head 1 and the two end sidewalls in the lower mold cavity is 0.25 mm.

[0117] The upper indenter 1 is made of hot work die steel, and there are exhau...

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Abstract

The invention relates to a liquid forging die and method for crusher jaw plates. An upper pressure head and a lower pressure head pressurize molten metal of the jaw plates in three steps, mold filling of the molten metal is completed at lower pressure, solidifying and feeding of the molten metal are completed at higher pressure, plastic deformation of the molten metal is completed at highest pressure, the supercooling degree of solidification is improved, the microscopic structure is refined, the feeding capacity is improved, shrinkage shortcomings are eliminated, a plastic deformation layer with the thickness being 10 mm is generated on the work surface, the comprehensive mechanical property is excellent, the breakage danger of the jaw plates is thoroughly eliminated, the jaw plates compact in interior and free of shrinkage shortcomings can be obtained, and the material utilization rate is increased to be higher than 90% from 70% in the past. In addition, metal casting molds replace sand molds in the prior art, and therefore the obtained jaw plates are smooth and clean in appearance and accurate in size, and the pollution of waste sand is eliminated. In the pouring process, a buffering pit and a pouring pad are used, and therefore the high-temperature molten metal does not directly impact a die cavity, fusion welding faults of the die are avoided, and the service life is remarkably prolonged.

Description

technical field [0001] The invention relates to a liquid die forging die and method for a jaw plate of a crusher, which is suitable for casting jaw plates of various specifications. Background technique [0002] Jaw crusher is commonly known as jaw crusher, also known as tiger mouth. The crushing cavity is composed of two jaw plates, the movable jaw and the static jaw, which simulate the movement of the two jaws of animals to complete the material crushing operation. It is widely used in various ores in mining smelting, building materials, roads, railways, water conservancy and chemical industries. For the crushing of bulk materials, the maximum compressive strength of the crushed materials is 320Mpa. [0003] The working part of the jaw crusher is two jaw plates, one is the fixed jaw plate (fixed jaw), which is fixed vertically (or the upper end is slightly outward) on the front wall of the body, and the other is the movable jaw plate (moving jaw). Inclined, forming a cru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D18/02
CPCB22D18/02
Inventor 邢书明邱博
Owner BEIJING JIAOTONG UNIV
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