Production method of pre-hardened high-speed steel products and production device thereof
A production method and production device technology, applied in the field of high-speed steel pre-hardened material production method and its production device, can solve the problems of uneven performance of workpieces, difficult temperature control, easy overheating or overburning of workpieces, etc., and achieve reduction of inventory, organization And the effect of stable performance and stable product quality
Active Publication Date: 2010-04-07
烟台百特合金材料制造有限公司
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Problems solved by technology
[0003] The production of high-speed steel pre-hardened material is generally heated by ordinary salt bath furnace. The disadvantage is that it is difficult to control the temperature, and the workpiece is easy to overheat or burn. When heating, the workpiece cannot be absolutely perpendicular to the liquid surface, causing the workpiece to form a wavy bend. Washboard type, for workpieces with a diameter less than or equal to 4mm, because the workpiece is not easy to roll, the straightening effect of the workpiece is very poor. If it is larger than 500mm, the longer the straightening effect is, the worse the straightening effect will be. Manual straightening must be used to cooperate. Many "wave bends" are formed during manual straightening. The degree of fire is inconsistent, resulting in uneven performance of the workpiece
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Embodiment
[0055] Embodiment, a kind of production method of high-speed steel pre-hardened material is that the production method uses high-speed steel wire rod as raw material, and each process is continuously produced without interruption. Apply prestress, quench and heat the pre-straightened raw material in a controlled atmosphere or in a salt bath furnace or an induction furnace. The heating temperature is 1120-1260°C, and the running speed is 50-2000mm / min. The high-speed steel wire is deformed in a small amount, the deformation amount is 0-0.1mm, and then quenched. The steel wire is pressed and cooled with a straightening machine and a water-cooled jacket to reduce cooling deformation. At the same time, the quenched steel wire is straightened. The temperature of 460℃-660℃ is used for the first tempering to transform the retained austenite into martensite, reduce the stress and make the hardness meet the requirement. Cool the steel wire to room temperature before the second temperin...
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The invention discloses a production method of pre-hardened high-speed steel products and a production device thereof. The method is characterized by taking high-speed steel wires as raw materials and comprises the following steps: pre-straightening the raw materials, carrying out quench heating on the pre-straightened raw materials, carrying out small deformation on the high-speed steel wires by a wire-drawing die after quenching, quenching, straightening, tempering in a tempering furnace, straightening, tempering, straightening and cooling, and carrying out cutting-to-length on the products formed by traction by a tractor. The invention is characterized by combining quenching, tempering and straightening to carry out continuous production, realizing online production of the pre-hardened high-speed steel wires, ensuring identical product organizations and properties, ensuring reliable and stable quality and producing various steel wires with length being more than 2m and with good straightness.
Description
technical field [0001] The invention belongs to the technical field of processing methods and equipment for special steel, and in particular relates to a production method and a production device for high-speed steel pre-hardened material. Background technique [0002] At present, the production of high-speed steel pre-hardened materials is to use high-speed steel discs to straighten and cut (the length is generally 2m), and then cut the straightened strips according to production requirements. Put it into a salt bath furnace to heat, rub it straight with a washboard, and press and quench it. Bundle the quenched steel wires into bundles, and then stack multiple bundles in the basket for tempering. Due to the large amount of furnace in the tempering furnace, the heating time and heating temperature of each workpiece are inconsistent, which makes the performance unstable. At the same time, there are many workpieces. Wavy bends require a lot of manual straightening. This meth...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C21D8/06C21D1/18C21D1/42C21D1/46C21D1/74C21D9/52C21D11/00
CPCY02P10/25
Inventor 姚凤臣
Owner 烟台百特合金材料制造有限公司