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Manufacturing technology for ceramic reinforced metal-based composite squeeze roller

A metal-matrix composite and manufacturing process technology, which is applied in the field of metal-based composite materials, can solve the problems of increasing the manufacturing cost of roller presses, high carbide costs, and complicated preparation processes, so as to save costs, improve service life, and improve the manufacturing process. simple effect

Inactive Publication Date: 2017-12-12
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of this method is complicated, the equipment requirements are high, and the manufacturing cost is increased.
Chinese invention patent CN102784686A discloses a stud for a rolling machine. The method is to prepare the stud by powder metallurgy low-pressure sintering after mixing the carbide and the binder phase. machine manufacturing cost

Method used

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  • Manufacturing technology for ceramic reinforced metal-based composite squeeze roller
  • Manufacturing technology for ceramic reinforced metal-based composite squeeze roller
  • Manufacturing technology for ceramic reinforced metal-based composite squeeze roller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A manufacturing process of a ceramic-reinforced metal-matrix composite extrusion roll, comprising the following steps:

[0032] (1) Fully mix 100-mesh zirconium corundum ceramic particles and binder according to 9:1, fill them into a mold to prepare a third cylindrical ceramic particle preform;

[0033] (2) Preheat the prefabricated body to 850°C and fix it in the sand mold cavity, and pour high manganese steel molten metal at 1550°C to obtain the wear-resistant block 2;

[0034] (3) The wear-resistant block 2 is heated to 700°C at 90°C / h, kept for 1.5h, then heated to 1050°C at 50°C / h, water-quenched after holding for 2h, and then finished to ensure that the chuck 5 and the slot 6 and keyway 9 to achieve the required accuracy, and bolt holes are processed on the edge of the wear block;

[0035] (4) 40CrNiMo steel is made into roller tire 1 by upsetting, drawing, and die forging. It is finished after normalizing at 920°C, oil quenching at 870°C, and tempering at 300°C ...

Embodiment 2

[0039] A manufacturing process of a ceramic-reinforced metal-matrix composite extrusion roll, comprising the following steps:

[0040] (1) Fully mix 60-mesh zirconium corundum ceramic particles and binder according to 9:1, fill them into a mold to prepare a quarter cylindrical ceramic particle preform;

[0041] (2) Preheat the prefabricated body to 900°C and fix it in the mold cavity, pour Cr26 high-chromium cast iron metal liquid at 1500°C to compound by centrifugal casting, and obtain the wear-resistant block 2;

[0042] (3) The wear-resistant block 2 is heated to 600°C at 60°C / h, kept for 2h, then heated to 980°C at 50°C / h, kept for 1h, and air-cooled; then finish machining to ensure that the chuck 5 and the slot 6 and the keyway 9 to achieve the required accuracy, and process bolt holes on the edge of the wear block;

[0043] (4) 40CrNiMo steel is made into roller tire 1 by upsetting, drawing, and die forging. It is finished after normalizing at 920°C, oil quenching at 87...

Embodiment 3

[0047] A manufacturing process of a ceramic-reinforced metal-matrix composite extrusion roll, comprising the following steps:

[0048] (1) Fully mix 80-mesh WC ceramic particles and binder according to 9:1, fill them into a mold to prepare a quarter-cylindrical ceramic particle preform;

[0049] (2) Preheat the preform to 900°C and fix it in the mold cavity, pour 65Mn molten metal at 1500°C and perform compounding by extrusion casting to obtain the wear-resistant block 2;

[0050] (3) The wear-resistant block 2 is heated to 820°C at 60°C / h, kept for 0.5h, oil quenched, heated to 380°C for 2h and air-cooled; The required accuracy, and bolt holes are machined on the edge of the wear block;

[0051] (4) 40CrNiMo steel is made into roller tire 1 by upsetting, drawing, and die forging. It is finished after normalizing at 920°C, oil quenching at 870°C, and tempering at 300°C twice, and wear-resistant block 2 is processed matching keyway and bolt holes.

[0052] (5) Each wear-resist...

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Abstract

The invention discloses a manufacturing technology for a ceramic reinforced metal-based composite squeeze roller. The manufacturing technology comprises the following steps of S1, preparation of a ceramic prefabricated body, S2, preparation of abrasion-resistant blocks, S3, finish machining of the abrasion-resistant blocks, S4, machining of a roller tire, and S5, assembly of the composite squeeze roller. The composite squeeze roller comprises the roller tire and the abrasion-resistant blocks. Each abrasion-resistant block comprises an arc-shaped metal substrate and an arc-shaped ceramic plate, wherein the inner arc face of the metal substrate is provided with a key groove, the two ends of the metal substrate are provided with a clamping head and a clamping groove correspondingly, and the side face of the metal substrate is provided with a screw hole. The multiple abrasion-resistant blocks are mutually connected in a clamped mode into an annular roller body through the clamping heads and the clamping grooves. The roller tire and the roller body are connected with each other through keys. A safe edge is connected to the side face of the roller body through the screw hole. The manufacturing technology is simple in process, the detachable composite squeeze roller is prepared and has the advantages of being good in composite effect, high in abrasion resistance, long in service life, convenient to replace and repair and the like, production efficiency is improved, and cost is reduced.

Description

technical field [0001] The invention relates to the technical field of metal-matrix composite materials, in particular to a manufacturing process of ceramic-reinforced metal-matrix composite extrusion rolls. Background technique [0002] Roller presses play a very important role in the cement mining industry as pre-grinding or semi-finishing equipment in the grinding system. The core components of the extrusion roller press are prone to wear and fatigue shedding due to high stress and cyclic stress during the working process, which greatly reduces its service life and production efficiency. With the rapid development of social economy, the demand for raw materials such as minerals is increasing, and the consumption of extrusion rollers is increasing year by year. Extrusion rollers produced by traditional techniques cannot meet market demand due to short service life, difficult manufacturing process, high cost, long repair time, high repair cost, and difficulty in enlarging ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 蒋业华薛达周谟金张孝足韦鸿铭冯晶
Owner KUNMING UNIV OF SCI & TECH
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