Method for producing base steel abrasion-proof duplex metal compound material with centrifugal casting

A composite material and centrifugal casting technology, which is applied in the production process of steel-based composite non-ferrous metals and their alloys, can solve the problems of non-densification, slag inclusion on the composite surface, and easy falling off of the composite layer.

Inactive Publication Date: 2007-11-28
ZIBO JINJUSHUANG METAL PRODS
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The traditional production method of steel-based wear-resistant bimetallic composite materials is high-temperature casting. I

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Produce M48×2×50 low-pressure valve stem nuts with Tr28×5 internal thread. According to the nominal diameter Φ28 of the internal trapezoidal thread, the composite hole is determined to be Φ31×50. Select 45#Φ50 round steel to process the blank, after alkali washing, pickling, deacidification, coating compound agent (mass composition: 0.5% zinc chloride, 1% ammonium chloride, 5% potassium chloride, 5% sodium chloride , lithium chloride 1.5%, potassium fluoride 0.5%, sodium fluoride 1%, sodium carbonate 3%, sodium bicarbonate 2%, borax 6%, boric acid 5%, water 69.5%), make cap mouth, at room temperature After drying and preheating at 320°C for 60 minutes, fill the smelted ZCuZn38Mn2Pb2 alloy, put it into a constant temperature composite furnace at 850-1000°C, keep it warm for 10 minutes, put it into the centrifuge quickly and vertically at high temperature, and start the centrifuge ( Set the centrifugation time for 90 seconds), centrifuge at an angle of 45° for 90 seconds...

Embodiment 2

[0017] Production of Φ72×120 medium and high pressure valve stem nuts, the material requirements are steel base and ZCuAl9Fe4 alloy, the trapezoidal thread in the inner hole is Tr32×6, according to the nominal diameter of the trapezoidal thread, the diameter of the compound hole is determined to be Φ36, and the steel base is 45#Φ75×125 round Steel, drilling, alkali cleaning, pickling, deacidification, coating compound agent (mass composition: 2.5% zinc chloride, 0.5% ammonium chloride, 2.5% potassium chloride, 10% sodium chloride, 0.5% lithium chloride %, Potassium Fluoride 2%, Sodium Fluoride 0.5%, Sodium Carbonate 2%, Sodium Bicarbonate 5%, Borax 2%, Boric Acid 2%, Water 70.5%. Minutes later, fill the smelted ZCuAl9Fe4 alloy, put it in a constant temperature composite furnace at 1100-1300°C for 15 minutes, put it vertically into the centrifuge at high temperature, start the centrifuge (set the centrifugation time to 180 seconds), and in the vertical state Centrifuge down, re...

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PUM

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Abstract

The centrifugal casting process of producing wear resistant steel-base bimetal composite material includes the following steps: producing steel base blank, drilling compounding holes, alkaline pickling, acid pickling, eliminating acid, coating compounding agent into the holes, forming mouth, drying at room temperature, preheating to 300-350 deg.c, pouring molten non-ferrous metal or alloy into the holes, centrifugally forming at 850-1300 deg.c and 1200-1800 rpm, cooling and machining. The wear resistant steel-base bimetal composite material thus produced has compact compounding surface, no slag inclusion, great adhesion, great tensile strength and wide use.

Description

technical field [0001] The invention relates to the production technology of composite non-ferrous metal and its alloy with steel matrix. Background technique [0002] Steel-based wear-resistant bimetallic composite material is a new type of material researched, developed and promoted by the state in recent years. Its advantage is based on steel, and the inner surface is compounded with non-ferrous metals and alloys. It not only increases the strength of non-ferrous metals and alloys, but also saves a large amount of non-ferrous metals such as copper in the country, and has been widely used in valves. Rod nuts, worm gears, bearing bushes and other industries. For example, the patent publication number is the disclosed "steel-based wear-resistant bimetal stem nut" of CN2177857, the disclosed "steel-based wear-resistant bimetallic turbine" of CN2187712, etc. The traditional production method of steel-based wear-resistant bimetallic composite materials is high-temperature cas...

Claims

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Application Information

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IPC IPC(8): B22D13/12B22D19/06
Inventor 王明光王正谦李士庆边欣
Owner ZIBO JINJUSHUANG METAL PRODS
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