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Mixing roll scraper production process

A production process and machine scraper technology, applied in the direction of manufacturing tools, metal processing equipment, coatings, etc., can solve the problems of difficult mold cleaning, poor product release, limited life of castings, etc., and achieve significant economic and social benefits, Improve production efficiency and product quality, high strength and wear resistance effect

Active Publication Date: 2015-01-14
ANHUI PROVINCE XIAO COUNTRY HUALONG REFRACTORY MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the scraper materials of the mixer are various commercially available wear-resistant steels, and some manufacturers use martensitic steel. However, its wear resistance, especially the wear resistance of the scouring wear condition, needs to be improved.
In addition, the hardenability of the castings formed by using the current high-chromium cast iron materials is somewhat insufficient due to the air quenching process. Among them, the hardness of the hypoeutectic and eutectic high-chromium cast irons is still low, and the service life of the castings is limited.
At the same time, the existing mixing machine scraper production process generally adopts direct pouring and molding, and the products produced in this way are directly attached to the mold, which is easy to cause the product to be difficult to release from the mold, and the phenomenon of sticking to the mold will occur, which brings troubles to the cleaning of the mold. great difficulty

Method used

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  • Mixing roll scraper production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Using intermediate frequency induction furnace for melting, the production process of casting mixer scraper is as follows:

[0023] 1) Casting mold preparation: prepare steel casting molds according to the size required by the design, clean the surface of the steel casting mold, and then evenly coat the slurry on the surface of the treated steel casting mold and dry;

[0024] In terms of weight percentage, the composition and content of the slurry are: tungsten 9, nickel 10, chromium 15, silicon 4, carbon 5, boron 1.5, rare earth element 0.01, and the rest is Fe, and the coating powder is evenly mixed according to the composition ratio , put the above raw materials into a ball mill barrel, add 8% saturated rubber gasoline solution and ball mill and mix to prepare the slurry;

[0025] 2) Ingredients: by weight percentage, the composition and content of the scraper of the mixer are: carbon 1, tungsten 2.8, chromium 2.6, molybdenum 2.9, the total of other impurity elements...

Embodiment 2

[0030] Using intermediate frequency induction furnace for melting, the production process of casting mixer scraper is as follows:

[0031] 1) Casting mold preparation: prepare steel casting molds according to the size required by the design, clean the surface of the steel casting mold, and then evenly coat the slurry on the surface of the treated steel casting mold and dry;

[0032] In terms of weight percentage, the composition and content of the slurry are 30 tungsten, 7 nickel, 9 chromium, 3 silicon, 3.5 carbon, 3 boron, 0.3 rare earth elements, and the rest is Fe, and the coating is evenly mixed according to the composition ratio Powder, put the above raw materials into a ball mill barrel, add 8% saturated rubber gasoline solution to ball mill and mix to make a slurry;

[0033] 2) Ingredients: by weight percentage, the composition and content of the scraper of the mixer are: carbon 0.7, tungsten 3, chromium 3.1, molybdenum 3.3, the total of other impurity elements ≤ 0....

Embodiment 3

[0038] Using intermediate frequency induction furnace for melting, the production process of casting mixer scraper is as follows:

[0039] 1) Casting mold preparation: prepare steel casting molds according to the size required by the design, clean the surface of the steel casting mold, and then evenly coat the slurry on the surface of the treated steel casting mold and dry;

[0040] In terms of weight percentage, the composition and content of the slurry are tungsten 57, nickel 4, chromium 6, silicon 1.5, carbon 2, boron 1.5, rare earth element 0.5, and the rest is Fe, and the coating is evenly mixed according to the composition ratio Powder, put the above raw materials into a ball mill barrel, add 8% saturated rubber gasoline solution to ball mill and mix to make a slurry;

[0041] 2) Ingredients: by weight percentage, the composition and content of the scraper of the mixer are: carbon 0.4, tungsten 2.8, chromium 3.2, molybdenum 3.5, the total of other impurity elements ≤...

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Abstract

The invention discloses a mixing roll scraper production process including casting die preparation, material preparation, melting, casting and heat treatment. The ingredients of the mixing roll scraper include 0.4 to 1 of carbon, 2.8 to 3.1 of tungsten, 2.6 to 3.2 of chromium, 2.9 to 3.5 of molybdenum, other impurity elements < / =0.1 and balance of iron. The process is simple, producing efficiency is high, and the obtained product is high in strength and wear resistance, easy to strip and long in service life.

Description

technical field [0001] The invention relates to the technical field of mixing machines, in particular to a production process of a mixing machine scraper. Background technique [0002] Wear-resistant materials are indispensable and important consumable parts in crushing and grinding equipment in the industrial field. Most of them are produced by casting, which not only consumes a lot, but also has a wide range of applications. The survey shows that in 2006, the national consumption in friction, The funds for wear and lubrication are 950 billion yuan, while the spare parts consumption and equipment maintenance costs caused by wear and tear are 28.3 billion yuan and 40.6 billion yuan respectively (2009 Chinese Academy of Engineering Consulting Research Report). With the advancement of industrial technology, the service conditions of wear-resistant materials are becoming more and more severe. Therefore, the research and development of cast wear-resistant materials with high st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D3/00B22C9/06B22C3/00C22C38/22B02C23/00
CPCB02C23/00B22C3/00B22C9/06B22D3/00C22C38/12C22C38/18
Inventor 王尉董祥雷王永新
Owner ANHUI PROVINCE XIAO COUNTRY HUALONG REFRACTORY MATERIALS