Preparation method of structure steel forging
A technology for structural steel and forgings, which is applied in the field of preparation of structural steel forgings, can solve the problems of high technical requirements for production workers, long production cycles, and low production efficiency, and achieve the goals of improving working conditions, low production costs, and increasing service life Effect
Inactive Publication Date: 2014-07-30
范承祥
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Problems solved by technology
This production process has low utilization rate of materials, high energy consumption, low production efficiency, high cost, long production cycle, and relatively high technical level requirements for production workers.
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[0020] A method for preparing structural steel forgings, using scrap steel as raw material, smelting high-quality molten steel in an intermediate frequency electric furnace, then performing liquid die forging on a hydraulic press, and demoulding at about 1200°C; Billet, final forging, edge trimming, residual heat quenching (used only when necessary), the detailed steps are as follows:
[0021] S1. Material selection: select scrap steel suitable for this process as raw material, and the selected scrap steel is carbon structural steel or low-alloy structural steel scrap, which is rich in scrap steel resources. The steel scrap in this step is inspected to determine the type and content of its chemical composition, and then suitable steel scrap is selected as the raw material for processing the forging in this process.
[0022] S2. Intermediate frequency furnace smelting: Put the selected steel scrap into the intermediate frequency furnace to smelt high-quality molten steel (high-...
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The invention particularly relates to an improvement of a preparation method of a structure steel forging, and aims at providing a forging preparation method with the advantages that the energy source is saved, the utilization rate of material is improved, the production cost is reduced, and the labor condition is improved. The method comprises the following steps of using waste steel as raw material, smelting into high-quality molten steel in a medium-frequency electric furnace, carrying out hydraulic forging on a hydraulic press, and demolding at the temperature of about 1200 DEG C; after demolding, immediately carrying out upsetting, blank making, final forging forming and edge cutting. The heat energy of molten steel is utilized for hydraulic forging; the demolding is carried out at high temperature, and then the forging forming is immediately carried out; the quenching is carried out by residual heat; the intermediate procedure does not need the reheating, so the production of forgings is realized. The method has the advantages that the utilization rate of material is high, the energy consumption is low, the production cycle is short, and the production cost is low; the automatic production is realized, and the labor condition is improved; the whole production process is completed by a plurality of single machines on one flow production line; blanks can be automatically conveyed by manipulators and conveying belts between the single machines.
Description
technical field [0001] The invention relates to a method for preparing a structural steel forging, in particular to a method for preparing a forging that saves energy, improves material utilization, reduces production costs, and improves working conditions. Background technique [0002] At present, the production process of automobile forgings is mostly cut into sections with high-quality circular steel saws, then heated in a furnace to about 1200°C, and then forged on a press after being released from the furnace. This production process has low utilization rate of materials, high energy consumption, low production efficiency, high cost, long production cycle, and relatively high requirements on the technical level of production workers. Contents of the invention [0003] The purpose of the present invention is to provide a method for preparing forgings with low energy consumption, high steel utilization rate, low production cost and good working conditions. [0004] In ...
Claims
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Login to View More IPC IPC(8): B21J5/02B21J5/08B22D18/02B23P13/00
Inventor 范承祥
Owner 范承祥