Classification of wire rod

The wire is generally made of ordinary carbon steel and high-quality carbon steel. According to the different steel distribution catalog and use, the wire rod includes ordinary low carbon steel hot rolled disk rod, high-quality carbon steel wire rod, carbon welding rod rod, tempered thread rod, wire rod for wire rope, piano wire rod rod and stainless steel wire rod.

1. Ordinary low carbon steel hot rolled disc (GB701-65), ordinary low carbon steel hot rolled disc is rolled by low carbon ordinary carbon structural steel or low yield point carbon structural steel, is the largest amount of wire varieties, the most widely used wire rod, also known as flexible wire. This is the general line

Main uses: The general line is mainly used for reinforcing reinforced concrete structures in buildings, and can also be cold-drawn into steel wire, for bundling and other purposes.

2. Ordinary low carbon steel non-torsional controlled cooling and hot rolled wire rod (ZBH4403-88), non-torsional controlled cooling and hot rolled wire rod is made of controlled cooling after rolling by non-torsional high-speed wire mill. The material is the same as that of ordinary wire, but the non-torsional controlled cooling and hot rolled wire rod has the advantages of high dimensional accuracy, good surface quality and high mechanical properties. This is the high line

Main uses: Torsion-free controlled cooling, hot rolling wire dimension accuracy is divided into A, B, C three levels. Class A, B, C accuracy is suitable for wire drawing, construction, packaging and welding rods and other purposes, Class B, C accuracy is suitable for processing into bolts, screws and nuts.

3. High-quality carbon steel wire rod (GB4354-84), high-quality carbon steel wire rod is rolled with high-quality carbon structural steel. It is one of the varieties with large amount of wire.

Main uses: high quality carbon steel wire rod is mainly used for processing and manufacturing carbon spring steel wire, oil quenching and tempering carbon spring steel wire, prestressed steel wire, high strength high quality carbon structural steel wire, galvanized steel wire, galvanized strand wire rope and so on.

4. High-quality carbon steel torsion-free cooling and hot-rolled wire rod (ZBH44002-88), high-quality carbon steel torsion-free cooling and hot-rolled wire rod is rolled by torsion-free high-speed wire mill, and controlled cooling treatment is taken after rolling. Compared with high quality carbon steel wire rod, it has high dimensional accuracy, good surface quality and higher mechanical properties.

Main use: The main use is the same as the high quality carbon steel wire rod. Commonly used in the manufacture of carbon spring steel wire, oil quenched and tempered carbon spring steel wire, prestressed steel wire, high-quality carbon structural steel wire, galvanized steel wire.

5. Wire rod for wire making (YB349-64), wire rod for wire making is one of the high-quality carbon structural steel hot rolled disk strips.

Main Uses: Wire rod can be made of 35, 40, 45, 55, 60, 65, 70, 75, 80 and 85 high quality carbon structural steel. Chemical composition in line with GB699(high quality carbon structural steel technical conditions) provisions.

6. Non-torsional controlled cooling and hot rolling wire rod (ZBH44004-88), non-torsional controlled cold and hot rolling plate and high-quality carbon structural steel are rolled on non-torsional wire rolling mill and made of controlled cooling after rolling. The rod rolled in this way has high dimensional accuracy, good surface quality and superior mechanical properties.

Main applications: Mainly used for drawing rope wire and steel strand wire.

7. Carbon electrode steel wire (GB3429-82), carbon electrode steel wire is made of low carbon high-quality carbon structural steel hot rolled.

Main application: Mainly used for manufacturing manual arc welding core.

8. Carbon electrode steel non-torsional controlled cooling, hot rolled wire (ZBH44005-88), carbon electrode steel non-torsional controlled cooling, hot rolled wire is rolled on the lock twisted wire mill, and controlled cooling after rolling. It is a kind of high quality welding rod steel rod with high dimensional precision, good surface quality and superior performance.

Main application: It is mainly used for manufacturing carbon steel hot rolled disk strip with coated electrode steel core.

9. Alloy structural steel hot rolled wire (GB3077-82), alloy structural steel hot rolled wire is rolled by alloy structural steel as material. Alloy structural steel has a total of 26 steel groups and 78 steel grades. Each production plant selects each brand for production according to the requirements of the demander and different uses.

Main applications: alloy structure hot rolled wire rod is mainly used for drawing steel wire, metal products and structural parts.

10. Carbon tool steel hot rolled wire (GB1298-86), carbon tool steel is rolled from high quality or high quality high carbon steel. Good processability and wear resistance, cheap price.

Main uses: Mainly used for drawing steel ratio and manufacturing tools.

11. Alloy tool steel hot rolled wire (GB1299-77) Alloy tool steel is a carbon tool steel matrix to add chromium, tungsten, molybdenum, vanadium, silicon, manganese, nickel and cobalt alloy elements and refined steel. Compared with carbon tool steel. It has the characteristics of good hardenability, small tendency to crack in heat treatment, high wear resistance and heat resistance. Alloy tool steel hot rolled wire rod is made of alloy tool steel with 5 steel groups and 33 steel grades. It is produced by Dalian Steel plant, Benxi Steel Plant and Shaanxi Steel Plant.

Main applications: Suitable for measuring tools, cutting tools and cold, hot working molds, impact resistant tools, etc.

12. Spring steel hot rolled wire (GB1222-84) Spring steel is used to make springs or other elastic components of steel. Springs and elastic components mainly use their elastic denaturation to absorb and store energy, so as to alleviate vibration, shock or make the parts complete certain actions. Because it is working under the condition of shock, vibration or long-term uniform cyclic alternating stress, the spring steel is required to have a high yield strength, especially a high yield ratio (the ratio of yield strength to tensile strength) and high elastic fatigue strength, high temperature resistance and corrosion resistance. Spring steel should also have a good surface quality. Spring steel has a total of 17 grades of carbon spring steel and alloy spring steel.

Main uses: spring steel hot rolled wire rod is mainly used to produce coil springs for various purposes.

13. Ball bearing steel hot rolled wire (YB9-68), ball bearing steel referred to as bearing steel, is used to manufacture all kinds of rolling bearing rings (bushing) and rolling body (ball) steel. Due to the particularity of its use, bearing steel is required to have high and uniform hardness and wear resistance, high elasticity and fatigue strength. Adequate toughness and hardenability, while having a certain corrosion resistance in atmospheric environments or lubricants. Some special purpose rolling bearings also require high temperature resistance, corrosion resistance, non-magnetic, ultra-low temperature, high precision, long life and other properties. Therefore, the selection of bearing steel and steel quality requirements are stricter than general steel. Bearing steel usually refers to high-carbon chromium steel, in addition to carburized bearing steel, high-carbon chromium stainless bearing steel. Generally used for rolling ball bearing steel hot rolled wire rod there are 5 steel numbers.

Main uses: Hot rolled ball rod of ball bearing steel is mainly used to manufacture steel ball of bearing.

14. Stainless steel wire rod (GB4356-84), stainless steel wire rod is made of a variety of grades of stainless steel with different body types.

Main Uses: Stainless steel wire rod is mainly used for manufacturing stainless steel wire, stainless spring steel wire, stainless top forging steel wire and stainless steel wire rope. According to the main use of the industry to distinguish, stainless steel wire rod also has stainless steel and stainless acid-resistant steel wire rod.

15. Stainless steel wire rod for welding (GB4241-84), stainless steel wire rod for welding is different from general stainless steel wire rod in chemical composition. In order to ensure its excellent welding performance and improve the quality of the weld, the notable characteristics of the stainless steel wire rod for welding are low carbon content, less toxic impurities such as phosphorus and sulfur, and high nickel and chromium content.

Main applications: Mainly used in the manufacture of welding rod steel core and welding wire.