The production processes of alloy pipes and seamless carbon steel pipes are different
1. Alloy pipe is a kind of
seamless steel pipe, and its performance is much higher than that of ordinary seamless steel pipe. Alloy pipes are divided into structural seamless pipes and high-pressure heat-resistant alloy pipes. Mainly different from alloy pipes and their industry production standards, the annealing and tempering of alloy pipes changes their mechanical properties. meet the required processing conditions. Its performance is higher than ordinary seamless steel pipe. The chemical composition of alloy pipes contains more Cr and has the characteristics of high temperature resistance, low temperature resistance and corrosion resistance.
2. Carbon steel pipes are made by perforating steel ingots or solid round steel into capillary tubes, and then hot rolling, cold rolling or cold drawing. The raw material of carbon steel pipes is round tube blanks. The round tube blanks need to be cut into billets of about 1 meter in length by a cutting machine and transported to the furnace by a conveyor belt. The billet is fed into the furnace for heating, and the temperature is about 1200 degrees Celsius. The fuel is hydrogen or acetylene. Furnace temperature control is a critical issue. After the round tube comes out of the furnace, it must be perforated with a pressure punching machine.
Alloy pipes contain different elements than carbon steel pipes
Alloy pipes contain more other elements than carbon steel pipes.
1. Alloy pipe refers to steel that contains not only silicon and manganese as alloying elements or deoxidizing elements, but also other alloying elements, and some also contain certain non-metallic elements. According to the content of alloy elements in steel pipes, they can be divided into low alloy steel pipes, medium alloy steel pipes and high alloy steel pipes.
2. Carbon steel pipe mainly refers to steel whose mechanical properties depend on the carbon content in the steel pipe. Generally, it does not add a large amount of alloying elements. It is sometimes also called ordinary carbon steel pipe.
The chemical properties of alloy pipes and carbon steel pipes are different
1. Carbon steel pipes contain a certain amount of carbon. The greater the hardness, the higher the strength, but the lower the plasticity.
2. Add other elements, such as manganese, nickel, chromium, silicon, etc., to the alloy tube to obtain different mechanical and chemical properties to meet better usage requirements.
Comparison of properties between alloy pipes and carbon steel pipes
1. Characteristics of carbon steel
①Easy to smelt and process
② Low cost and wide application
③Can strengthen heat treatment
④ Poor tempering stability
⑤Poor economic penetration
⑥The alkaline phase has low strength and poor toughness, and cannot meet special performance requirements.
2. Characteristics of alloy steel
①Smelting and processing is difficult
②High cost
③High tempering stability
④High hardenability
⑤ The basic phase has high strength and good toughness, and can meet special performance requirements
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