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Double-liquid composite casting protective agent

A composite casting and protective agent technology, applied in the field of casting, can solve the problems of relatively large fluctuations in the process parameters of the double-liquid composite casting, and the low pass rate of the double-liquid composite product, so as to achieve guaranteed performance, strong bonding force, and less double-liquid fusion Effect

Active Publication Date: 2020-08-07
HANDAN HUIQIAO COMPOSITE MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual production, complex conditions such as environmental factors, operating factors, and cognitive factors make the process parameters of double-liquid composite casting fluctuate greatly, and the pass rate of double-liquid composite products is low

Method used

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  • Double-liquid composite casting protective agent

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Example 1: Double-liquid composite casting of a bimetallic hammer head.

[0018] The bimetallic hammer head is composed of high chromium cast iron hammer end and carbon steel or low alloy steel hammer handle to meet the unity of wear resistance and high toughness. attached figure 1 It is a schematic diagram of the pouring system of a bimetallic hammer head. The molding sand box includes an upper box 1, a middle box 2 and a lower box 3. The lower part of the cavity is the hammer end cavity 5, and the upper part is the hammer handle cavity 6. At the bottom of the hammer end cavity 5 A cold iron I4 is installed, and a sand core 7 forming a hammer head installation hole is placed in the hammer handle cavity 6 .

[0019] Before pouring the molten metal of high chromium cast iron at the hammer end, position and assemble the middle box 2 and the lower box 3, as attached figure 2 As shown, the high chromium cast iron sprue cup 8, the high chromium cast iron sprue I9, the hig...

Embodiment 2

[0028] Example 2: bimetallic wear plate.

[0029] The bimetal wear-resistant plate is composed of high-chromium cast iron and carbon steel or low-alloy steel. The wear-resistant layer is the working layer. The material is high-chromium cast iron, and the carbon steel or low-alloy steel layer is the base layer. attached image 3 And attached Figure 4 It is a schematic diagram of the pouring system for bimetallic wear-resistant plates. After the sand boxes are combined, a plate-type cavity is formed. The upper part is a carbon steel cavity 27, and the lower part is a wear-resistant cavity 24. At the bottom of the wear-resistant cavity 24, a cold iron II 23 is designed. The high chromium cast iron pouring system includes a high chromium cast iron sprue II21, a high chromium cast iron inner runner II22 and a high chromium cast iron overflow outlet II25. Carbon steel or low alloy steel gating system includes carbon steel sprue II29, carbon steel inner runner II30, carbon steel o...

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Abstract

The invention discloses a double-liquid composite casting protective agent applied to the casting industry. The protective agent comprises a low-melting-point quenching agent and a heat-insulating agent, wherein the protective agent is added in many times. The low-melting-point quenching agent comprises a base material, a cosolvent and a quenching agent, wherein the base material comprises lime and bauxite, the cosolvent comprises borax and cryolite, the quenching agent comprises tellurium powder and soda, and the weight percentages of the lime, the bauxite, the borax, the cryolite, the tellurium powder and the soda are 15-25%, 15-25%, 10-20%, 15-25%, 3-6% and 15-25% respectively. The heat-insulating agent is calcium metasilicate, and the addition amount of the calcium metasilicate is 10-30% of the weight of the low-melting-point quenching agent. During double-liquid composite casting, the protective agent is used, a liquid surface quickly crusts, the bonding surface is protected, thebimetal composite quality is good, the binding force is high, double-liquid fusion is small, component control is stable, and the performance of bimetal is guaranteed.

Description

technical field [0001] The invention is applied in the field of casting, relates to bimetallic double liquid compound casting, and is used for protecting the double liquid compound bonding surface. Background technique [0002] In the two-liquid composite casting process, the quality of mold flux directly determines the success or failure of the product. Mold slag or protective agent for double-liquid composite casting is mostly used in centrifugal casting composite tubular castings. Patent documents CN101530897B, CN101774010B, and CN104308113B all use mold slag to protect the joint surface of bimetal, but the usage is different. CN101530897B, CN101774010B The mold slag in CN104308113B is added into the mold after the outer layer is poured. In centrifugal casting, due to the centrifugal force, the steel slag can be separated, so the mold powder technology has been mature in the production of centrifugal casting composite pipes, but in the traditional cavity casting process,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D27/04B22D19/16
CPCB22D19/16B22D27/04
Inventor 邢振国邢万里常连波申海滨张学志
Owner HANDAN HUIQIAO COMPOSITE MATERIAL TECH CO LTD
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