Spring steel wire production process used for controlling inclusion substances

The invention relates to a spring steel wire production process used for controlling inclusion substances, and the process is mainly as follows: by use of a Si / Mn deoxidization smelting process, Al and Ca content in steel is controlled as far as possible, and MgO content in the inclusion substances is increased to obtain low melting point CaO.SiO2.Al2O3 series inclusions; in the smelting process, by the deoxidization control and secondary refining process, the target control range of the inclusion substances can be SiO2:40-70%, Al2O3:10-25% and CaO:20-50%; the content ratio of CaO to SiO2 is 0.2-1.0, and the size of most of the inclusion substances can be controlled at less than 5 mum. By plastic control of the inclusion substances, the drawing performance of spring steel can be improved, and the fatigue limit of the spring can be increased.

Aluminiferous low-carbon cold heading wire rod steel and production method thereof

The invention relates to a wire rod steel and a production method thereof, aiming at overcoming the defect that at present, spinning has overhigh temperature, so as not to be beneficial to reducing iron scale or adopting overhigh roller speed as well as full phase transition of the steel and growing up of ferrite, thus reducing the properties of drawing and cold heading of steel. The measurement is that the aluminiferous low-carbon cold heading wire rod steel has the chemical components based on the weight percentage: 0.04-0.08% of C, 0.01-0.05% of Si, 0.35-0.55% of Mn, less than or equal to 0.030% of P, less than or equal to 0.035% of S, 0.02-0.06% of Als and the rest of Fe and unavoidable impurity. The technique is that continuously cast bloom is heated up to 950-1040 DEG C with the section temperature being less than or equal to 30 DEG C; the start rolling temperature is 900-1000 DEG C, and the finishing temperature is 950-990 DEG C; after the water is cooled, the spinning is at 880- ...

Online steel wire rod cold heading test recording method and system

The invention relates to an online steel wire rod cold heading test recording method and system, aiming at solving the problems that when an existing steel wire rod meter is detected, manual detection is adopted, so that the production efficiency is low, the safety is poor, and labor and force are consumed. The system comprises a straightening system, a conveying system, a first clamping device, a cutting system, a cold header, a second clamping device and a meter detection device; a steel wire rod cut from a production line is straightened, conveyed, clamped, cut and treated by cold heading and meter detection, so that online steel wire rod cold heading test recording can be realized. The method can completely replace the manual detection, and is simple in technology, safe, reliable, high in efficiency, time-saving, labor-saving and environmentally friendly.

Method for measuring electric conductivity of wire for copper-clad steel

The invention relates to a method for measuring the electric conductivity of a wire for copper-clad steel. The method comprises the following steps: (1) placing the wire for the copper-clad steel at constant temperature T, measuring the resistance R of the wire for the copper-clad steel, measuring cross sectional area S along the length direction of the wire for the copper-clad steel, measuring the lengths L (m) of two potential ends of the wire for the copper-clad steel, and calculating the actual measurement resistivity rho and the actual measurement electric conductivity of the wire for the copper-clad steel at the temperature T; (2) setting an environment temperature correction coefficient K as R20/RT, and drawing a linear relation between the environment temperature correction coefficient K and the temperature T; (3) determining the ratio of the actual measurement electric conductivity to the environment temperature correction coefficient K as the electric conductivity of the wire ...

Device and method for measuring mechanical properties of thin steel wire

The invention relates to a device for measuring the mechanical properties of a thin steel wire. The device comprises a hydraulic cylinder, an electronic spring force measuring device, a hydraulic cylinder, a manual wire rotating roll and a camera, wherein a piston rod of the hydraulic cylinder is fixedly connected to the top of a shell of the electronic spring force measuring device, a force measuring end of the electronic spring force measuring device is fixedly connected to one end of a measured steel wire, the manual wire rotating roll is fixedly connected to the other end of the measured steel wire, a lens of the camera is aligned with a force measuring value display end of the electronic spring force measuring device, and the diameter of the measured steel wire is less than or equal to 0.5mm. The device can be used for effectively measuring the mechanical properties of the steel wire with the diameter of less than or equal to 0.5mm. The device is simple in structure, convenient to ...

Super high strength cable steel and production method thereof

The invention discloses super high strength cable steel and a production method thereof. The steel comprises the following chemical components in weight percent: C: 0.01-0.08, Si: 0.001-0.09, Mn: 0.05-0.20, P: less than or equal to 0.015, S: less than or equal to 0.010, Als: 0.005-0.03 and the balance of Fe and inevitable impurities. The production method of the super high strength cable steel is conducted in accordance with the normal pure steel technology and comprises the following steps: hot metal desulfurization, furnace revolving smelting, argon blowing, RH furnace treatment, continuous casting, square blank heating, high thread rolling and Stelmor cooling control. The practice has proven that the tensile strength of the steel is high, the electrical conductivity can reach more than 15%, the steel has favorable cold-drawing property; moreover, the operation of the preparation method is simple and the energy consumption is low.

Easily-cut copper-niobium composite steel and production method thereof

The invention relates to easily-cut copper-niobium composite steel. The easily-cut copper-niobium composite steel contains the ingredients in percentage by weight (wt%): 0-0.10% of C, 0-0.05% of Si, 0.65-1.35% of Mn, 0.04-0.09% of P, 0.20-0.40% of S, 0.10-0.50% of Cu and 0.05-0.20% of Nb. A production method comprises the production steps of carrying out converter steelmaking; heating casting blanks; carrying out heat preservation on the casting blanks for 120-300 minutes; carrying out hot-rolling; slowly cooling; cooling to room temperature by air. According to the easily-cut copper-niobium composite steel and the production method thereof, the inclusion distribution of manganese sulfide is more dispersed, the length-width ratio is smaller, and the steel is of a spindle shape which is easy to cut; a continuous casting nozzle is difficult to jam, and the rolling can not skid, so that the cutting performance is further improved; meanwhile, the lives of easily-cut steel parts can be effectively ...

High speed wire rod anti-false-alarm folding defect monitoring device

The invention discloses a high speed wire rod anti-false-alarm folding defect monitoring device which is mounted between a front rolling mill and rear rolling mill on a high speed wire rod production line and which comprises a first wire rod width measuring mechanism and a first wire rod height measuring mechanism which are arranged at the outlet of the front rolling mill, and a second wire rod width measuring mechanism and a second wire rod height measuring mechanism which are arranged at the inlet of the rear rolling mill. The first wire rod width measuring mechanism is perpendicular to the axis of a roller of the front rolling mill, the first wire rod height measuring mechanism is parallel to the axis of the roller of the front rolling mill, the second wire rod width measuring mechanism is perpendicular to the axis of a roller of the rear rolling mill, and the second wire rod height measuring mechanism is parallel to the axis of the roller of the rear rolling mill. By the aid of the ...

Boracic cold heading wire rod steel and production method thereof

The invention relates to a wire rod steel and a production method thereof, aiming at overcoming the defects that at present, spinning is carried out at the high temperature of 900-980 DEG C, the cooling velocity is high, and the wire rod steel has high original intensity and surface hardness, is easy to have the phenomenon of filament breakage when in the process of drawing, etc. The measurement is that the boracic cold heading wire rod steel has the chemical components based on the weight percentage: 0.18-0.23% of C, 0.01-0.085% of Si, 1.05-1.10% of Mn, less than or equal to 0.030% of P, less than or equal to 0.035% of S, 0.0006-0.0025% of B, less than or equal to 0.008% of N, 0.03-0.06% of Ti and the rest of Fe and unavoidable impurity. The technique is that continuously cast bloom is heated up to 1000-1035 DEG C with the section temperature being less than or equal to 30 DEG C; the start rolling temperature is 1000-1050 DEG C, and the finishing temperature is 960-990 DEG C; after the ...

Wire rod electric conductivity automatic measuring device

The invention discloses a wire rod electric conductivity automatic measuring device. The wire rod electric conductivity automatic measuring device comprises a first pinch roll and a second pinch roll both arranged at the same water level; at least two groups of diameter measuring rolls are arranged between the first pinch roll and the second pinch roll; a test sample clamp capable of clamping a test sample in a vertical lifting and dropping manner is arranged between the two groups of the diameter measuring rolls; a pair of grinding wheels which can be dropped and lifted vertically is arranged between the first pinch roll and the second pinch roll and located above the test sample clamp; the distance between the grinding wheels is greater than the width of the test sample clamp; a group of tips which can retractable horizontally to tightly support against the test sample is arranged below the first and second pinch rolls; the end parts of the tips are connected with a measuring part of ...

Steel for shielded wires, and manufacturing method thereof

The invention discloses steel for shielded wires and a manufacturing method of the steel. The steel comprises the following chemical components in percentage by weight: 0.001-0.05% of C, 0.001-0.1% of Si, 0.05-0.20% of Mn, less than or equal to 0.015% of P, less than or equal to 0.010% of S, 0.01-0.25% of Ti, and the balance of Fe and inevitable impurities. The manufacturing method is carried out according to the regular technology of clean steel, and comprises the following steps: conducting molten iron desulphurization treatment in a blast furnace; smelting in a converter; argon blowing; processing in an RH furnace; continuous casting; billet accepting; billet heating; high line rolling; stelmor controlled cooling; coil collecting; baling and packaging. Practice proves that the steel is high in strength, good in toughness and light in weight; meanwhile, the manufacturing method is simple in technology and convenient to operate.

Aluminiferous low-carbon cold heading wire rod steel and production method thereof

The invention relates to a wire rod steel and a production method thereof, aiming at overcoming the defect that at present, spinning has overhigh temperature, so as not to be beneficial to reducing iron scale or adopting overhigh roller speed as well as full phase transition of the steel and growing up of ferrite, thus reducing the properties of drawing and cold heading of steel. The measurement is that the aluminiferous low-carbon cold heading wire rod steel has the chemical components based on the weight percentage: 0.04-0.08% of C, 0.01-0.05% of Si, 0.35-0.55% of Mn, less than or equal to 0.030% of P, less than or equal to 0.035% of S, 0.02-0.06% of Als and the rest of Fe and unavoidable impurity. The technique is that continuously cast bloom is heated up to 950-1040 DEG C with the section temperature being less than or equal to 30 DEG C; the start rolling temperature is 900-1000 DEG C, and the finishing temperature is 950-990 DEG C; after the water is cooled, the spinning is at 880- ...

Method and device for automatically recording hook numbers of high wire coil

The invention discloses a method and device for automatically recording hook numbers of a high wire coil. The method is characterized by comprising the steps that a plurality of C-shaped hooks as lifting devices of the high wire coil are numbered; recognition equipment for recognizing the numbers is arranged on the advancing path of the C-shaped hooks; when the C-shaped hooks pass through the recognition equipment, the recognition equipment recognizes the numbers, and signals are transmitted to recording equipment for recording. The C-shaped hooks are numbered, number information is read and recorded fully automatically, the hook numbers of the coil are recorded accurately without errors, the problem that the hook numbers are recorded manually in the prior art is thoroughly solved, and full automation and zero error are achieved.

Production method of copper clad steel

Cutting device for continuous casting sheet billet

The invention discloses a cutting device for a continuous casting sheet billet. The cutting device is arranged on a roller way of a continuous casting sheet billet cutting production line. The cutting device comprises flamethrowers and supports used for installing the flamethrowers. A plurality of the flamethrowers are uniformly arranged above the roller way along an inclined line. According to the cutting device for the continuous casting sheet billet, the flamethrowers arranged in an inclined-line mode can reduce bending deformation caused by local expansion in the cutting process of the sheet billet and match with a sheet billet clamping device when the sheet billet is cut in the cold state so that bending of the sheet billet in the longitudinal direction can be resisted, and the probability of generating scrapped billets can be reduced. The flamethrowers carry out cutting at the same time online at the high temperature, the cutting mode can not be achieved manually, and therefore the ...

Boracic cold heading wire rod steel and production method thereof

The invention relates to a wire rod steel and a production method thereof, aiming at overcoming the defects that at present, spinning is carried out at the high temperature of 900-980 DEG C, the cooling velocity is high, and the wire rod steel has high original intensity and surface hardness, is easy to have the phenomenon of filament breakage when in the process of drawing, etc. The measurement is that the boracic cold heading wire rod steel has the chemical components based on the weight percentage: 0.18-0.23% of C, 0.01-0.085% of Si, 0.80-1.10% of Mn, less than or equal to 0.030% of P, less than or equal to 0.035% of S, 0.0006-0.0025% of B, less than or equal to 0.008% of N, 0.03-0.06% of Ti and the rest of Fe and unavoidable impurity. The technique is that continuously cast bloom is heated up to 1000-1100 DEG C with the section temperature being less than or equal to 30 DEG C; the start rolling temperature is 1000-1050 DEG C, and the finishing temperature is 960-990 DEG C; after the ...