As the key parts of the engine, the reasonableness of the production process and precautions are very important to ensure the quality of the product. This paper will introduce in detail the production process of main and auxiliary connecting rod forging and the matters that should be paid attention to in the production process.
Process flow
Preparation of raw materials: Select the appropriate steel to ensure that its chemical composition, mechanical properties and metallographic structure meet the requirements. At the same time, the necessary straightening and cleaning of raw materials are carried out.
Cutting: According to the requirements of the forging drawings, the raw material is cut into the appropriate size and shape by flame cutting, laser cutting or plasma cutting.
Heating: The cut raw material is placed in the heating furnace and uniformly heated to the appropriate temperature to prepare for the subsequent forging process.
Forging: The heated material is forged, and through several upsetting, drawing and punching processes, the required forging blanks of the main and auxiliary connecting rod are gradually formed.
Trimming and shaping: trimming the forged blank to remove excess metal materials, and the necessary shaping to ensure that the shape of the forging meets the requirements.
Cooling: The forged blank is cooled naturally or other measures are taken for rapid cooling to prevent excessive internal stress.
Quality inspection: Comprehensive quality inspection of the cooled forgings, including size, appearance, metallography, etc., to ensure product quality.
Painting and packaging: Qualified forgings are painted to increase their corrosion resistance, then packaged and ready for shipment.
Matters needing attention
Strictly control the heating temperature: the heating temperature has a greater impact on the quality of the forging, and it must be ensured that the heating temperature is uniform and within the specified range. High temperature may lead to oxidation, decarbonization or overburning of steel; If the temperature is too low, cracks may occur during forging.
Reasonable choice of forging equipment: Choose the right forging equipment according to the size and shape of the forging, to ensure that the forging force is enough and will not cause excessive load on the equipment.
Pay attention to control the amount of deformation: in the forging process, the process should be reasonably arranged to control the amount of deformation of the material, to avoid the material cracking or deterioration of organizational properties due to excessive deformation.
Ensure uniform cooling: For large forgings, measures should be taken to ensure uniform cooling to prevent cracks caused by excessive internal stress due to temperature differences.
Strict control of quality testing: quality testing is the last gateway to ensure product quality, and the testing standards should be strictly observed and the unqualified products should be processed in time.
Pay attention to safety in production: in the production process, should abide by the safety regulations, take the necessary safety measures to prevent the occurrence of industrial accidents.
Continuous improvement and innovation: With the continuous progress of technology, we should continue to improve the production process, optimize the process, improve efficiency, and encourage technological innovation, improve product quality and reduce production costs.
By strictly following the process flow of the production of main and auxiliary connecting rod forging and paying attention to the above precautions, it can ensure that the produced forging has excellent mechanical properties, stable quality and long service life. This is essential for the normal operation of the engine, and can bring good economic benefits and market reputation for the relevant enterprises.
