Views:83 Author:Ronsco Publish Time: 2021-05-25 Origin:Ronsco
The forging plant heats the cut blanks before forging and processing the shaft forgings. The heating temperature and time of the blanks of different materials are different. Then, when controlling the heating quality of the billet, attention should be paid to checking whether the material grade, melting furnace number, size specification, and quantity are consistent with the process card, and whether they are consistent with the forging product material before heating. Before the billet is loaded into the furnace, the debris in the furnace must be cleaned up. The surface of the billet heated in the electric furnace must not be contaminated with oil.
When the shaft forging plant enters the furnace, the billet should be placed in the work area. In order to achieve uniform heating of the billet, cushion blocks should be added to the large billet, and the blanks should be spaced apart and discharged in an orderly manner. When the electric furnace is heating, the blank should be kept away from the heating element, or shielding measures should be taken to prevent the metal from overburning. When the shaft forging blank is heated, the thickness of the oxide scale and the decarburized layer shall meet the requirements of the shaft forging process. The heating of the blank is not allowed to cause overheating, overburning and internal cracks. The blank cannot be forged on time for some reason. It can be processed by cooling or out of the furnace. , But it must meet the requirements of the process regulations.
Shaft forgings are processed by forging to shape the required metal structure. After hot forging, the original as-cast looseness, pores, microcracks, etc. are compacted, and the dendritic crystals of the steel are broken and the crystal grains are changed. It can change the original carbide segregation and uneven distribution at the same time to make the structure uniform and improve the metal performance.
The production process of shaft forgings is to make the metal plastically flow to make the workpiece of the required shape. The production process of shaft forgings includes blank blanking before forming, heating and pretreatment of blanks. After forming, the forging is processed by lathe to remove the allowance, and the properties of the forging are improved through heat treatment. Finally, after finishing cutting to make the shape of the forging meet the requirements of the drawing, it can be shipped after surface treatment and packaging.
The volume of the shaft forging metal does not change after being subjected to external force to produce plastic flow, and the metal always flows to the part with the least resistance. In the forging of shaft forgings, the shape of the forging is often controlled according to these rules, and the general shape of the shaft forging is forged through deformation methods such as upsetting, drawing, reaming, bending, and drawing. For large-volume shaft forgings to make the size accurate and conducive to the organization of mass production, mold forming methods can be used to organize specialized mass or mass production.
The characteristics of shaft forgings are to obtain forgings with internal compactness, uniformity, fineness, good overall performance, and reliable use through forging.
The above are the characteristics of shaft forgings in the production process. After understanding, the quality and efficiency of shaft forgings can be better improved.