With the development of construction machinery industry, aluminum forgings are more and more widely used in machinery manufacturing. In order to ensure the safety, reliability and performance stability of construction machinery, it is very important to effectively control and test the quality of aluminum forgings. The following will detail the construction machinery aluminum forgings quality control and quality testing methods.
I. Quality control methods:
- Material selection: Reasonable selection of high-quality aluminum as raw materials, the purity and composition of materials directly affect the performance of forgings. Ensure the quality of raw materials through long-term cooperation with excellent suppliers.
- Process control: strictly control the heating temperature, holding time and cooling speed of the forging to ensure that the internal organization and mechanical properties of the forging meet the design requirements. In the entire production process, each process is controlled and monitored to find and correct problems in time.
- Equipment management: regular maintenance and maintenance of manufacturing equipment to ensure the normal operation and efficient work of equipment. At the same time, the introduction of advanced equipment and technology to improve production efficiency and product quality.
- Strengthen staff training: Through training for different positions, improve the quality awareness and skill level of employees, so that they can master the process and operation norms, and can find and deal with quality problems in a timely manner.
- Quality testing method:
- Appearance inspection: Careful inspection of the appearance of aluminum forgings, including size, surface finish, surface defects, etc. Use tools such as visual inspection, magnifying glass or microscope to ensure that there are no obvious defects in appearance.
- Size measurement: Use precision measuring tools, such as micrometer, vernier caliper, coordinate measuring machine, etc., to measure the size of aluminum forgings and compare it with the design drawings to determine whether it meets the requirements.
- Tissue inspection: Metallographic microscope and other equipment are used to observe and analyze the tissue of aluminum forgings. Through the evaluation of grain size, grain boundary and phase content, we can judge whether the microstructure properties of aluminum forgings meet the requirements.
- Physical properties test: The tensile strength, impact toughness and other physical properties of aluminum forgings are tested using tensile testing machines, impact testing machines and other equipment. According to the test results, determine whether the material properties of aluminum forgings meet the standard requirements.
- Chemical composition analysis: Through the spectrometer, chemical analyzer and other equipment, the chemical composition of aluminum forgings is analyzed. Ensure that the composition of the material meets the design requirements to ensure its mechanical properties and corrosion resistance.
In summary, the quality control and quality inspection methods of aluminum forgings of construction machinery include material selection, process control, equipment management, staff training and other aspects of the method. At the same time, the quality inspection method covers the appearance inspection, size measurement, tissue inspection, physical property testing and chemical composition analysis. Through the comprehensive application of these control and testing methods, the quality of aluminum forgings of construction machinery can be guaranteed to meet the design requirements, and the reliability and market competitiveness of products can be improved.
