Wire rods are mainly used as raw materials for reinforced concrete reinforcement and welding structural parts or reprocessing (such as wire drawing, formulation, etc.). According to the steel distribution catalog, wire rods include ordinary low carbon steel rolled wire rod, electric pad rod, wire rod for blasting wire, quenched and tempered threaded wire rod, and high-quality wire rod. Wire rods with a wide range of uses are mainly ordinary low-carbon steel hot-rolled wire rods, also known as ordinary wire rods, which are hot-rolled from Q195, Q215, and Q235 ordinary carbon steels, with a nominal diameter of 5.5-14.0mm, generally rolled into The weight of the disk is 100-200kg, and now it is mostly used for rolling on a non-twist high-speed wire rod mill and controlled cooling after rolling. The maximum weight of the disk with a diameter of 5.5-22.0mm can reach 2500kg. Ordinary wire is mainly used in construction, wire drawing, packaging, welding rod and manufacturing bolts, nuts, rivets, etc. High-quality wire rod, only high-quality carbon structural steel hot-rolled wire rod is supplied. Such as 08F, 10, 35Mn, 50Mn, 65, 75Mn, etc. Used as the raw material of steel wire and other metal products and other structural parts, and other high-quality steel rolled wires. It is customary to include high-quality profiles above 8mm, and metal products below 8mm.
Wire rod is one of the steel varieties with a large consumption. After rolling, it can be directly used for reinforcement and welding of reinforced concrete, or it can be used after reprocessing. For example, it is drawn into steel wires of various specifications, then twisted into steel wire ropes, woven into steel wire nets, wound and formed and heat-treated into springs; hot and cold forged into rivets, cold forged and rolled into bolts, screws, etc.; Cutting into heat treatment to make mechanical parts or tools.
Wire rods are generally made of ordinary carbon steel and high-quality carbon steel. According to different steel distribution catalogs and uses, wire rods include ordinary low-carbon steel hot-rolled round wire rod, high-quality carbon steel wire rod, carbon welding rod wire rod, quenched and tempered threaded wire rod, wire rod for wire rope, and wire rod for piano wire And stainless steel wire rod, etc.
、Ordinary low-carbon steel hot-rolled round wire rod (GB701-65), ordinary low-carbon steel hot-rolled round wire rod is rolled by low-carbon ordinary carbon structural steel or carbon structural steel with lower yield point, which is a wire rod The wire rod with the largest consumption and the most widely used in the variety, so it is also called ordinary wire, or ordinary wire for short.
Main application: Ordinary wire is mainly used for reinforcement of building reinforced concrete structures. It can also be cold drawn into steel wire for bundling.
, Ordinary low carbon steel non-twist controlled cooling, hot-rolled wire rod (ZBH4403-88), non-twisted controlled cooling, hot-rolled wire rod is made by the non-twist high-speed wire rod rolling mill and then adopts controlled cooling. The material is the same as the ordinary wire. However, non-torsion controlled cold and hot-rolled wire rod has the advantages of high dimensional accuracy, good surface quality, and higher mechanical properties.
Main application: The dimensional accuracy of non-twist controlled cooling and hot-rolled wire rods is divided into three levels: A, B, and C. A, B, C grade precision is suitable for wire drawing, construction, packaging and welding rod, etc. B, C grade precision is suitable for processing into bolts, screws and nuts.
, 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 most used varieties of wire rod varieties.
Main application: High-quality carbon steel wire rod is mainly used for processing and manufacturing carbon spring steel wire, oil-quenched and tempered carbon spring steel wire, prestressed steel wire, high-strength high-quality carbon structural steel wire, galvanized steel wire, galvanized stranded wire rope, etc. .
, High-quality carbon steel non-twisting controlled cooling and hot-rolled wire rod (ZBH44002-88), high-quality carbon steel non-twisting controlled cooling, hot-rolled wire rod is rolled by a non-twisting high-speed wire rod rolling mill, and controlled cooling is adopted after rolling deal with. Compared with high-quality carbon steel wire rod, it has high dimensional accuracy, good surface quality and higher mechanical properties.
Main application: The main application is the same as that of 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, etc.
, Wire rod for rope-making wire (YB349-64), wire rod for rope-making wire is one of the high-quality carbon structural steel hot-rolled round wire rods.
Main application: Wire rod for rope-making steel wire can be made of high-quality carbon structural steel of steel grade 35, 40, 45, 55, 60, 65, 70, 75, 80 and 85. The chemical composition meets the requirements of GB699 (Technical Conditions for High-quality Carbon Structural Steel).
, No-twist controlled cold and hot-rolled wire rod for rope-making steel wire (ZBH44004-88), non-twist cold-rolled hot-rolled plate for rope-making steel wire and high-quality carbon structural steel, rolled on a twist-free wire rod rolling mill. After controlled cooling and made. The wire rod rolled in this way has high dimensional accuracy, good surface quality and superior mechanical properties.
Main use: Mainly used for drawing rope wire and steel strand wire.
, Carbon welding rod steel wire rod (GB3429-82), carbon welding rod steel wire rod is made of low-carbon high-quality carbon structural steel by hot rolling.
Main use: Mainly used to manufacture manual arc welding core.
, Carbon electrode steel non-torsion controlled cooling, hot-rolled wire rod (ZBH44005-88), carbon electrode steel non-torsion controlled cooling, hot-rolled wire rod is rolled on a closed-twisted wire rod rolling mill, and controlled cooling after rolling production. With high dimensional accuracy, good surface quality and superior performance, it is a high-quality welding rod steel wire rod.
Main use: Mainly used to make carbon steel hot-rolled round wire rod with steel core of electric welding rod with coating.
, Alloy structural steel hot-rolled wire rod (GB3077-82), alloy structural steel hot-rolled wire rod is rolled from alloy structural steel. The alloy structural steel has 26 steel groups and 78 steel grades. Each manufacturer selects various grades for production according to the buyer’s requirements and different uses.
Main application: Alloy structure hot-rolled wire rod is mainly used for drawing steel wire, metal products and structural parts.
, Carbon tool steel hot-rolled wire rod (GB1298-86), carbon tool steel is rolled from high-quality or high-quality high-carbon steel. Good processing performance and wear resistance, and low price.
Main use: Mainly used for drawing steel ratio and manufacturing tools.
, Alloy tool steel hot-rolled wire rod (GB1299-77) alloy tool steel is made by adding chromium, tungsten, molybdenum, vanadium, silicon, manganese, nickel and cobalt to the matrix of carbon tool steel. . Compared with carbon tool steel. It has the characteristics of good hardenability, low heat treatment cracking tendency, high wear resistance and heat resistance. Alloy tool steel hot-rolled wire rod is made of alloy tool steel with 33 steel grades in 5 steel groups. They are produced by Dalian Steel Plant, Benxi Steel Plant and Shaanxi Steel Plant.
Main purpose: suitable for the production of measuring tools, cutting tools, cold and hot work molds, impact-resistant tools, etc.
, Spring steel hot-rolled wire rod (GB1222-84) Spring steel is a steel used to manufacture springs or other elastic elements. Springs and elastic elements mainly use their elastic degeneration to absorb and store energy, so as to achieve the purpose of easing vibrations, shocks or enabling the machine to complete certain actions. Because it works under shock, vibration or long-term uniform cyclic alternating stress conditions, spring steel is required to have high yield strength, especially a high yield strength ratio (ratio of yield strength to tensile strength) and elasticity High fatigue strength, high temperature resistance and corrosion resistance. Spring steel should also have good surface quality.
There are 17 grades of spring steel in two categories: carbon spring steel and alloy spring steel.
Main use: Spring steel hot-rolled wire rod is mainly used for the production of spiral springs for various purposes.
, Ball bearing steel hot-rolled wire rod (YB9-68), ball bearing steel is referred to as bearing steel, which is used to manufacture various types of rolling bearing rings (shaft sleeves) and rolling elements (balls) of steel. Due to its special application, bearing steel is required to have high and uniform hardness and wear resistance, high elasticity and fatigue strength. Sufficient toughness and hardenability, while having certain corrosion resistance in the atmosphere or lubricants. Some special-purpose rolling bearings also require high temperature resistance, corrosion resistance, non-magnetic, ultra-low temperature, high precision, and long life. 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. There are 5 steel grades generally used for rolling ball bearing steel hot-rolled wire rods.
Main application: Ball bearing steel hot-rolled wire rod is mainly used to manufacture steel balls (steel balls) for bearings.
, Stainless steel wire rod (GB4356-84), stainless steel wire rod is made of hot-rolled stainless steel materials of various grades and different structures.
Main application: Stainless steel wire rod is mainly used to manufacture stainless steel wire, stainless spring steel wire, stainless steel upsetting steel wire and steel wire for stainless steel wire rope. According to the main industrial applications, stainless steel wire rods are also divided into stainless steel and stainless acid-resistant steel wire rods.
, Stainless steel wire rod for welding (GB4241-84), the chemical composition of stainless steel wire rod for welding is different from general stainless steel wire rod. In order to ensure its excellent welding performance and improve the quality of the weld, the salient characteristics of the composition of the stainless steel wire rod for welding are low carbon content, low phosphorus, sulfur and other toxic impurities, and high nickel and chromium content.
Main use: Mainly used to manufacture electric welding rod steel core and welding wire. In order to obtain good economic results.