Common materials are used in steel structures.
Nowadays, the use of steel structure is more and more demanding, so the steel structure is more and more demanding on the adoption of materials, so about the use of steel structure, which materials we mainly use for use, according to the use of different components, the use of materials is also different.
Main component materials:
1. Sliver board: thickness 8-32. Width 180-600. Length 15000 or less.
2. Coiled plate: open plate, open flat pattern plate. Generally wide 12501500.1800.2000。The thickness is 16 or less.
3. Hot-rolled medium-thick plate.
4. H-beam: hot-rolled H-beam, high-frequency welded H-beam.
Edit Minor Component Material:
1. I-beam, channel steel, angle steel (equilateral, unequal), round steel, rebar, etc.
2. Cold-formed hollow steel: square pipe, rectangular pipe.
3. Round pipe: the delivery time of high-frequency welded pipe, thermal expansion seamless pipe, seamless pipe and spiral pipe is 15-45 days, with a diameter of more than 219 and a wall thickness of less than 16. 30-45 days for longitudinal submerged arc welded pipe, diameter above 400, wall thickness below 50.
Enclosure materials:
1. Purlin: It is made of wide coil slitting or strip steel pressing.
Galvanizing: tin-free (strip steel), etc.
Black skin (non-galvanized): wide coil (Meigang, Wuhan Iron and Steel, Anshan Iron and Steel, Benxi Iron and Steel, etc.), strip steel (Tianjin rolling.
1. Tangshan Stainless Steel, etc.).
2. Color roll: the thickness of the conventional substrate (0.).35.0.40.0.50.0.55.0.6) Regular colors (Hyland, white ash, ivory, etc.).
3. Aluminum-zinc galvanized plate: the production area is Baosteel (Meigang), BlueScope, Union, etc.
4. Galvanized sheet: thickness below 3, width 10001250.1500 etc.;The production areas include Masteel, Tangshan Iron and Steel, Benxi Iron and Steel, etc.
5. Stainless steel: conventional thickness 10，1.2,1.5. Regular 10001220.1240。
Edit a brief introduction to high-speed steel.
Tool steels with high hardness, high wear resistance, and high heat resistance are also known as high-speed tool steels or edge steels. High speed steel is Taylor F. in the United Statesw.and mCreated by White in 1898. High-speed steel has good process performance, good strength and toughness, so it is mainly used to make complex thin edge and impact-resistant metal cutting tools, and can also make high-temperature bearings and cold extrusion dies. In addition to the high-speed steel produced by the smelting method, powder metallurgy high-speed steel has appeared after the 60s of the 20th century, and its advantage is to avoid the reduction of mechanical properties and heat treatment deformation caused by carbide segregation caused by smelting production.
Kind: High-speed steel is a complex steel grade with a carbon content of 070～1.65. The total amount of alloying elements can reach 10 25. According to the different alloying elements contained, it can be divided into: tungsten high-speed steel (containing tungsten 9 18) tungsten high-speed steel (containing tungsten 5 12 containing nickel 2 6) high high-speed steel (containing tungsten 0 2 containing 5 10) vanadium high-speed steel according to the different vanadium content is divided into general vanadium content (containing vanadium 1 2) and high vanadium content (containing vanadium 2.).5 5) of high-speed steel high-speed steel (including 5 10). According to different uses, high-speed steel can be divided into two types: general-purpose and special-purpose. General-purpose high-speed steel is mainly used to manufacture cutting tools (such as drills, taps, saw blades) and precision tools (such as hob cutters, shaper cutters, broaches) and precision tools (such as hob cutters, shaper cutters, broaches), and the commonly used steel grades are W18Cr4V, W6Mo5Cr4V2, etc. Special purpose high-speed steel, including high-speed steel and super-hard high-speed steel (hardness HRC68, 70), is mainly used to make tools for cutting difficult-to-machine metals (such as high-temperature alloys, titanium alloys and high-strength steels, etc.), and the commonly used steel grades are W12CR4V5CO5, W2MO9CR4VC8, etc.
Performance of high-speed steel cutting tools in addition to high hardness, high wear resistance and sufficient toughness, there is also an important factor is the red hardness. Red hardness refers to the ability of the cutting edge to resist softening in a red-hot state when cutting at high speeds. One way to measure the hardness of the steel is to heat it to 580 650 for 1 hour, then cool it, and then measure its hardness value after 4 times.
Edit: The quenching temperature of high-speed steel is generally close to the melting point of steel, such as 1210 1240 for tungsten high-speed steel and 1180 1210 for high-speed steel. After quenching, it is generally necessary to temper 3 times between 540 and 560. Increasing the quenching temperature can increase the red hardness of the steel. In order to improve the service life of high-speed steel tools, their surfaces can be strengthened, such as low-temperature cyanide, nitride, sulfur nitride, etc. Tool steels with high hardness, high wear resistance, and high heat resistance are also known as high-speed tool steels or edge steels. High speed steel is Taylor F. in the United Statesw.and mCreated by White in 1898. High-speed steel has good process performance, good strength and toughness, so it is mainly used to make complex thin edge and impact-resistant metal cutting tools, and can also make high-temperature bearings and cold extrusion dies. In addition to the high-speed steel produced by the smelting method, powder metallurgy high-speed steel has appeared after the 60s of the 20th century, and its advantage is to avoid the reduction of mechanical properties and heat treatment deformation caused by carbide segregation caused by smelting production.
Kind: High-speed steel is a complex steel grade with a carbon content of 070～1.65. The total amount of alloying elements can reach 10 25. According to the different alloying elements contained, it can be divided into: tungsten high-speed steel (containing tungsten 9 18) tungsten high-speed steel (containing tungsten 5 12 containing nickel 2 6) high high-speed steel (containing tungsten 0 2 containing 5 10) vanadium high-speed steel according to the different vanadium content is divided into general vanadium content (containing vanadium 1 2) and high vanadium content (containing vanadium 2.).5 5) of high-speed steel high-speed steel (including 5 10). According to different uses, high-speed steel can be divided into two types: general-purpose and special-purpose. General-purpose high-speed steel is mainly used to manufacture cutting tools (such as drills, taps, saw blades) and precision tools (such as hob cutters, shaper cutters, broaches) and precision tools (such as hob cutters, shaper cutters, broaches), and the commonly used steel grades are W18Cr4V, W6Mo5Cr4V2, etc. Special purpose high-speed steel, including high-speed steel and super-hard high-speed steel (hardness HRC68, 70), is mainly used to make tools for cutting difficult-to-machine metals (such as high-temperature alloys, titanium alloys and high-strength steels, etc.), and the commonly used steel grades are W12CR4V5CO5, W2MO9CR4VC8, etc.
Performance of high-speed steel cutting tools in addition to high hardness, high wear resistance and sufficient toughness, there is also an important factor is the red hardness. Red hardness refers to the ability of the cutting edge to resist softening in a red-hot state when cutting at high speeds. One way to measure the hardness of the steel is to heat it to 580 650 for 1 hour, then cool it, and then measure its hardness value after 4 times.
The quenching temperature of high-speed steel is generally close to the melting point of steel, such as 1210 1240 for tungsten high-speed steel and 1180 1210 for high-speed steel. After quenching, it is generally necessary to temper 3 times between 540 and 560. Increasing the quenching temperature can increase the red hardness of the steel. In order to improve the service life of high-speed steel tools, their surfaces can be strengthened, such as low-temperature cyanide, nitride, sulfur nitride, etc.
Edit.