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Petroleum carburant is an indispensable additive in iron and steel smelting.

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Petroleum carburant is an indispensable additive in iron and steel smelting.

Date:2017-08-24 Author: Click:

Petroleum carburizer is an indispensable additive in iron and steel smelting. It can save a lot of iron ore, increase the use of scrap steel and iron, reduce production costs and save non-renewable resources. The most widely used carburizing product we use is carburizing agent.

Carbon and sulfur are important elements to determine the quality of steel specifications. Iron products with carbon content higher than 1.7% are called cast iron, iron mouths with carbon content lower than 1.7% are called steel, steel with carbon content higher than 0.6% is called high carbon steel, steel with carbon content between 0.25-0.6% is called medium carbon steel, steel with carbon content less than 0.25% is called low carbon steel, and steel with carbon content less than 0.04% is called worker. Pure iron. Carbon plays an important role in the properties of steel. With the increase of carbon content, the hardness and strength of steel will increase, but the plasticity and toughness will decrease. On the contrary, the content of carbon will decrease, the hardness and strength will also decrease, and the toughness and plasticity will increase.

Sulphur will deteriorate the quality of steel and reduce the mechanical properties of steel into corrosion resistance and solderability. Especially if the sulfur in steel exists in the state of iron sulfide, because of its low melting point, it will cause the hot brittleness of steel, that is, thermal deformation, cracks will occur when working at high temperature, affecting the quality of products and service life. So the lower the sulphur content in steel is, the better. The sulfur content in common steel is less than 0.05%, tool steel is less than 0.045%, and high quality steel is less than 0.02%. In view of the important role of carbon and sulphur content on the quality and properties of iron and steel, the carbon and sulphur content in steel can be detected by oxygen combustion at high temperature. Can be converted to gas, which is the basis of combustion method for carbon and sulfur analysis.

Petroleum carburizing agent

 

 

Carburizer can not only increase the carbon content in steel, but also reduce the sulfur content in steel. It is a multi-purpose additive. To further improve the product quality of enterprises is a challenge for every enterprise which is actively developing, because the quality of products is an important pillar of the development of enterprises, in the huge casting production country, the production and application of castings occupy a large market.

Therefore, improving the quality of cast iron is a key, so how can we do better? Previously, we all know that ductile iron is made of scrap steel and pig iron, pig iron addition accounts for 60% - 80% of the total raw materials. Because of the high price of pig iron, the production cost of ductile iron castings remains high. If the scrap ratio can be increased in the raw material proportion, and graphite carburizing agent or graphitizing carburizing agent can be added at the same time, the appropriate composition can be obtained. In order to make good steel, the use of carburizer is an indispensable choice, and the choice of carburizer is also the key. The quality of the carburizing agent determines the quality of the molten iron. In fact, Huludao carburizer is a good use of carburizer, can reduce the tendency of shrinkage of molten iron, improve the performance of materials, carburizer is also the best choice.

Carburizer is so important, the choice of carburizer is also very important, high-temperature graphitization after the treatment of carburizer, after high-temperature graphitization treatment of nitrogen content significantly reduced, because only in the high-temperature graphitization stage, sulfur, nitrogen, hydrogen can be volatilized, which is the key to prevent nitrogen pores in the casting.

The use of carburizers has now become a scale, liquid ammonium sulfite to produce a good steel, high-quality carburizers can be said to be essential. Good carburizing agents can increase the amount of scrap iron and minimize the use of pig iron. It can also reduce the cost of production and create more benefits for casting and steelmaking.


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