How to judge the quality of air compressor parts
How to judge the quality of air compressor parts?
Visual inspection
Surface quality: The surface of high-quality accessories should be smooth and flat, without obvious scratches, cracks, sand holes, burrs and other defects. For example, the piston surface of the air compressor should be polished fine, without roughness, otherwise it may affect the coordination of the piston and the cylinder wall, resulting in air leakage and other problems.
Color and coating: the color of the accessories should be uniform, the coating or coating should be firm and dense, without falling off, foaming, rust and other phenomena. Taking the gas storage tank as an example, if the surface paint is uneven or there are rust spots, it may mean that its anti-corrosion treatment is not in place, which will affect the service life.
Dimensional accuracy: The key dimensions of the parts measured with calipers, micrometers and other tools should be consistent with the values in the product specification table, and the tolerance is within the allowable range. If the size deviation of the intake valve of the air compressor is too large, it may not be able to be installed normally or cause the intake volume to be unstable.
Material inspection
Check material certification: The regular parts supplier should be able to provide material certification documents, such as quality guarantee certificate, material test sheet, etc., clearly mark the material composition and performance indicators of the parts. For example, the filter element of the oil and gas separator, the material certificate should show that it uses an efficient filter material that meets the standard.
Simple test: For some metal accessories, a magnet can be used to test its magnetism and determine whether it is the required material. For example, some stainless steel fittings should not have strong magnetic properties. You can also use hardness testing tools, such as hardness meters, to test the hardness of the accessory surface, and compare it with the standard hardness value of the material to determine whether the material is up to standard.
Performance test
Pressure testing: For pressure-related accessories, such as safety valves, pressure sensors, etc., pressure testing can be performed. The use of professional pressure testing equipment, the accessories are placed under the specified pressure environment, to observe whether it can work normally, whether the pressure display is accurate, whether the safety valve can be opened and closed in time under the set pressure.
Flow test: Accessories such as air filters and intake valves can be tested for flow. Through a specific flow test device, the gas flow of the parts under a certain pressure is tested to meet the standard requirements. If the flow rate of the air filter is too small, it will affect the intake volume of the air compressor and reduce the work efficiency.
Operation test: If conditions permit, install the parts to the air compressor for operation test. Observe whether the accessories are smooth during operation, and whether there are abnormal vibration, noise, heat and other phenomena. For example, the motor of the air compressor should sound stable when running, without obvious vibration and overheating.
Internal structure analysis
Disassembly inspection: For some disassembly parts, such as oil and gas separators, air filters, etc., you can carefully disassemble them and observe their internal structure. The internal filters, partitions, seals and other components should be installed firmly and neatly, without damage, deformation, blockage and other problems. The filter element inside the oil and gas separator should be arranged tightly and without damage, otherwise it will affect the oil and gas separation effect.
Non-destructive testing: The use of non-destructive testing technology, such as ultrasonic testing, X-ray testing, etc., can detect whether there are cracks, pores, inclusions and other defects inside the accessories. For some key large parts, such as the cylinder block of air compressors, non-destructive testing can effectively find hidden quality problems inside.
Branding and certification
Brand reputation: Well-known brands usually have a good market reputation and quality assurance system, and the quality of the accessories produced by them is more reliable. Such as Ai Neng, Fusheng and other brands, in the field of air compressor accessories has a high reputation and reputation, user feedback is good.
Quality certification: Check whether the accessories have relevant quality certification marks, such as ISO 9001 quality management system certification, CE certification, etc. These certifications are an authoritative recognition of the quality and production process of the parts and show that the parts meet certain international or industry standards.
Visual inspection
Surface quality: The surface of high-quality accessories should be smooth and flat, without obvious scratches, cracks, sand holes, burrs and other defects. For example, the piston surface of the air compressor should be polished fine, without roughness, otherwise it may affect the coordination of the piston and the cylinder wall, resulting in air leakage and other problems.
Color and coating: the color of the accessories should be uniform, the coating or coating should be firm and dense, without falling off, foaming, rust and other phenomena. Taking the gas storage tank as an example, if the surface paint is uneven or there are rust spots, it may mean that its anti-corrosion treatment is not in place, which will affect the service life.
Dimensional accuracy: The key dimensions of the parts measured with calipers, micrometers and other tools should be consistent with the values in the product specification table, and the tolerance is within the allowable range. If the size deviation of the intake valve of the air compressor is too large, it may not be able to be installed normally or cause the intake volume to be unstable.
Material inspection
Check material certification: The regular parts supplier should be able to provide material certification documents, such as quality guarantee certificate, material test sheet, etc., clearly mark the material composition and performance indicators of the parts. For example, the filter element of the oil and gas separator, the material certificate should show that it uses an efficient filter material that meets the standard.
Simple test: For some metal accessories, a magnet can be used to test its magnetism and determine whether it is the required material. For example, some stainless steel fittings should not have strong magnetic properties. You can also use hardness testing tools, such as hardness meters, to test the hardness of the accessory surface, and compare it with the standard hardness value of the material to determine whether the material is up to standard.
Performance test
Pressure testing: For pressure-related accessories, such as safety valves, pressure sensors, etc., pressure testing can be performed. The use of professional pressure testing equipment, the accessories are placed under the specified pressure environment, to observe whether it can work normally, whether the pressure display is accurate, whether the safety valve can be opened and closed in time under the set pressure.
Flow test: Accessories such as air filters and intake valves can be tested for flow. Through a specific flow test device, the gas flow of the parts under a certain pressure is tested to meet the standard requirements. If the flow rate of the air filter is too small, it will affect the intake volume of the air compressor and reduce the work efficiency.
Operation test: If conditions permit, install the parts to the air compressor for operation test. Observe whether the accessories are smooth during operation, and whether there are abnormal vibration, noise, heat and other phenomena. For example, the motor of the air compressor should sound stable when running, without obvious vibration and overheating.
Internal structure analysis
Disassembly inspection: For some disassembly parts, such as oil and gas separators, air filters, etc., you can carefully disassemble them and observe their internal structure. The internal filters, partitions, seals and other components should be installed firmly and neatly, without damage, deformation, blockage and other problems. The filter element inside the oil and gas separator should be arranged tightly and without damage, otherwise it will affect the oil and gas separation effect.
Non-destructive testing: The use of non-destructive testing technology, such as ultrasonic testing, X-ray testing, etc., can detect whether there are cracks, pores, inclusions and other defects inside the accessories. For some key large parts, such as the cylinder block of air compressors, non-destructive testing can effectively find hidden quality problems inside.
Branding and certification
Brand reputation: Well-known brands usually have a good market reputation and quality assurance system, and the quality of the accessories produced by them is more reliable. Such as Ai Neng, Fusheng and other brands, in the field of air compressor accessories has a high reputation and reputation, user feedback is good.
Quality certification: Check whether the accessories have relevant quality certification marks, such as ISO 9001 quality management system certification, CE certification, etc. These certifications are an authoritative recognition of the quality and production process of the parts and show that the parts meet certain international or industry standards.
