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Composite toothed plate and casting method thereof

A compound tooth and tooth plate technology, applied in the field of metal casting manufacturing, can solve the problems of long downtime, high price of tooth plate, high quality of tooth plate, etc., and achieve the effect of improving strength and toughness, high bonding strength and service life

Inactive Publication Date: 2011-09-28
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large mass of the tooth plate (>1.6 tons / piece) and large volume (about 1800×1200×(80-150) mm), the crusher has a long downtime every time the tooth plate is replaced
At the same time, the price of each tooth plate is high, and the replacement and consumption of tooth plates have a great impact on production and cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Casting method of tooth plate in this embodiment

[0019] (1) Melting process of the matrix part

[0020] The material of the base part is composed of the following chemical composition in weight percentage: C 1.15%, Mn 17%, Si 0.6%, Cr 1.6%, Mo 0.5%, Ti 0.06%, RE 0.3%, S 0.03%, P 0.06%, The balance is Fe and unavoidable impurities. The smelting process includes the following steps: Add 2% bottom slag material at the bottom of the smelting furnace. The composition and weight percentage of the bottom slag material are: lime 80%, fluorite 20% ;Return to the furnace ultra-high manganese steel and carbon scrap steel ingredients, ferromolybdenum is added with the furnace charge according to the calculated amount, when the temperature reaches 1550 ° C, add electrolytic manganese, ferrochrome and ferro-titanium after drying according to the calculated amount, when the temperature is 1500 ° C, Carry out final deoxidation; the steel slag is mixed out, the ladle is cleaned in ad...

Embodiment 2

[0027] Casting method of tooth plate in this embodiment

[0028] (1) Melting process of the matrix part

[0029] The material of the base part is composed of the following chemical composition in weight percentage: C 1.2%, Mn 18%, Si 0.5%, Cr 1.7%, Mo 0.65%, Ti 0.10%, RE 0.3%, S 0.02%, P 0.03%, The balance is Fe and unavoidable impurities. The smelting process includes the following steps: Add 2.5% bottom slag material at the bottom of the smelting furnace. The composition and weight percentage of the bottom slag material are: lime 80%, fluorite 20% ;Return to the furnace ultra-high manganese steel and carbon scrap steel ingredients, add ferromolybdenum according to the calculated amount with the furnace charge, when the temperature reaches 1575 ° C, add the dried electrolytic manganese, ferrochrome and ferro-titanium according to the calculated amount, when the temperature is 1500 ° C, Carry out final deoxidation; the steel slag is mixed out, the ladle is cleaned in advance,...

Embodiment 3

[0036] Casting method of tooth plate in this embodiment

[0037] (1) Melting process of the matrix part

[0038] The material of the base part is composed of the following chemical composition in weight percentage: C 1.25%, Mn 19%, Si 0.3%, Cr 1.8%, Mo 0.8%, Ti 0.14%, RE 0.3%, S 0.01%, P≤0.01% , the balance is Fe and unavoidable impurities. The smelting process includes the following steps: add 3% bottom slag material at the bottom of the smelting furnace. The composition and weight percentage of the bottom slag material are: lime 80%, fluorite 20% %; back to the furnace for ultra-high manganese steel and carbon scrap steel ingredients, ferromolybdenum is added with the furnace charge according to the calculated amount, and when the temperature reaches 1600 ° C, add electrolytic manganese, ferrochrome and ferro-titanium after drying according to the calculated amount, when the temperature is 1500 ° C , for final deoxidation; steel slag is mixed out, the ladle is cleaned in ad...

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Abstract

The invention discloses a composite toothed plate and a casting method thereof. The toothed plate is embedded and cast with a wear-resistant alloy block in the easy abrasion part, and the chemical ingredient composition of the substrate part, the melting process, the shaping process and the thermal treatment process are optimized during the toothed plate casting. The toothed plate cast by the method has the advantages that the ware-resistant alloy block is combined with the substrate part in a diffusion metallurgical way, the combination intensity is high, and the strong toughness of the toothed plate substrate and the wear-resistant performance of local regions are improved, so the service life of the toothed plate is greatly improved.

Description

technical field [0001] The invention relates to a composite tooth plate and a casting method of the tooth plate, belonging to the technical field of metal casting manufacturing. Background technique [0002] Jaw crusher is a crushing machine widely used in mining, cement and electric power industries. The tooth plate is its main wearable part. Its working conditions are harsh and it is subjected to the impact and wear of various materials during work. Therefore, the performance requirements of the tooth plate must meet the appropriate hardness to resist the wear of the material; it should also have a certain toughness to resist fatigue spalling and prevent fracture, that is, it has good strength and toughness. [0003] For a long time, high-manganese steel, ultra-high manganese steel and high-chromium alloy steel have been mostly used for manufacturing. The service life is limited, and tooth plates need to be replaced frequently. Due to the large mass of the tooth plate (&g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B02C1/10C21C5/52C21C7/06C21C7/04B22C9/02C21D9/00
CPCY02P10/20
Inventor 谢敬佩王爱琴王文焱李洛利李继文
Owner HENAN UNIV OF SCI & TECH