Medical-Grade SUS304, Black POM Custom Component Assemblies
Header include
This process describes a manufacturing solution for a complete set of composite material assembly products applied in the medical industry. The core materials are SUS304 austenitic stainless steel and black POM (polyoxymethylene) engineering plastic. This solution, through precision mechanical processing and innovative assembly technology, organically combines the strength and corrosion resistance of metals with the self-lubricating and shock-absorbing properties of engineering plastics, aiming to manufacture functional integrated components that meet the special environmental requirements of the medical field. Its essence is cross-material category collaborative manufacturing, achieving the integrated function of "metal-plastic".
ManufacturingObjects
The processing object is modular functional components with relative motion or precise fit requirements in medical equipment or instruments. Typical applications include: precision sliding mechanisms in imaging equipment (such as CT and MRI), reagent dispensing valve groups in automatic analysis instruments, detachable handles and transmission housings of minimally invasive surgical instruments, as well as adjustment mechanisms in hospital beds or rehabilitation equipment. In these applications, SUS304 is typically used to manufacture brackets, shaft cores and connectors that require high strength, rigidity and repeated disinfection. Black POM is used to manufacture components such as gears, bearing housings, sliders, and sealing bushings that require low friction, silent operation, and insulation. The two are assembled into a complete functional unit through a precise interface.
Core features and requirements
The core feature of this complete set of products is "functional complementarity and precise interface coordination of heterogeneous materials". The specific requirements are reflected as：
1、Biocompatibility and environmental tolerance: The SUS304 part needs to be processed through electrolytic polishing and other techniques to achieve a surface state that is easy to clean and disinfect. Black POM must meet the standards of medical-grade raw materials, have no toxic leaching, and be resistant to the erosion of commonly used disinfectants.
2、Precision fit and dimensional stability: The mating interfaces between metal and plastic components (such as interference fit, snap-on connection, and threaded pair) need to maintain preload and accuracy under repeated disassembly and assembly as well as changes in temperature and humidity, to prevent loosening or jamming caused by the creep of POM or the difference in thermal expansion coefficients between SUS304 and POM.
3、Functional reliability: Components must ensure that under long-term load or cyclic movement, the wear resistance of POM parts and the fatigue strength of SUS304 meet the design life, and operate smoothly without noise.
4、Cleanliness and safety: The entire component must be free from any form of fiber shedding (especially POM parts), metal debris and dead corners. All edges and corners must be fully rounded to meet the cleanliness requirements of the medical environment.
Key processes and technologies
The realization of the above requirements relies on a series of targeted cross-material process controls:
1、Split precision machining
SUS304 component: Special stainless steel tools are used, and the cutting parameters are controlled to avoid work hardening. The key mating surfaces need to be finely ground or ground to achieve high dimensional accuracy and smoothness. After completion, thorough cleaning and passivation treatment should be carried out to form a stable passivation film.
Black POM component: It adopts sharp rake Angle tools, high-speed and fast feed processing, and is cooled by compressed air to prevent the material from overheating and melting. For the key parts of the mating dimensions, processing and measurement should be carried out in a constant temperature and humidity environment to compensate for the moisture absorption and expansion effect of the material.
2、Interface collaborative design and post-processing: During the design stage, tolerance optimization is carried out for the mating interface between SUS304 and POM, taking into account creep and thermal expansion. Appropriate surface treatments (such as specific plasma treatments) can be carried out on the mating surfaces of POM to fine-tune their surface energy. All components must undergo deep cleaning such as ultrasonic cleaning before assembly.
3、Precision assembly and verification: Assembly is carried out in a clean environment (such as a 10,000-level cleanroom). Use a constant torque tool to ensure the consistency of screw connections; For the press-fitting interface, a servo press is used to control the press-in speed and displacement. After assembly is completed, functional tests (such as smoothness of operation and sealing tests) and precision verification need to be carried out.
Conclusion
In conclusion, the manufacturing of complete sets of SUS304 and black POM assembly products for the medical industry goes beyond the scope of processing single materials and is a systematic project. It has successfully integrated the reliability of stainless steel with the functionality of engineering plastics. Through differentiated precision processing based on the physical and chemical properties of the two materials, as well as collaborative design and control of cross-material interfaces, it has ultimately achieved integrated functional components that meet the strict requirements of medical equipment. This "combination of rigidity and flexibility" solution not only optimizes the performance of the equipment and the user experience, but also reflects the important trend of modern medical equipment manufacturing towards lightweighting, modularization and humanization. It is the key to enhancing the overall reliability, safety and maintainability of medical equipment.
Medical-Grade SUS304, Black POM Custom Component Assemblies
Header include
This process describes a manufacturing solution for a complete set of composite material assembly products applied in the medical industry. The core materials are SUS304 austenitic stainless steel and black POM (polyoxymethylene) engineering plastic. This solution, through precision mechanical processing and innovative assembly technology, organically combines the strength and corrosion resistance of metals with the self-lubricating and shock-absorbing properties of engineering plastics, aiming to manufacture functional integrated components that meet the special environmental requirements of the medical field. Its essence is cross-material category collaborative manufacturing, achieving the integrated function of "metal-plastic".
ManufacturingObjects
The processing object is modular functional components with relative motion or precise fit requirements in medical equipment or instruments. Typical applications include: precision sliding mechanisms in imaging equipment (such as CT and MRI), reagent dispensing valve groups in automatic analysis instruments, detachable handles and transmission housings of minimally invasive surgical instruments, as well as adjustment mechanisms in hospital beds or rehabilitation equipment. In these applications, SUS304 is typically used to manufacture brackets, shaft cores and connectors that require high strength, rigidity and repeated disinfection. Black POM is used to manufacture components such as gears, bearing housings, sliders, and sealing bushings that require low friction, silent operation, and insulation. The two are assembled into a complete functional unit through a precise interface.
Core features and requirements
The core feature of this complete set of products is "functional complementarity and precise interface coordination of heterogeneous materials". The specific requirements are reflected as：
1、Biocompatibility and environmental tolerance: The SUS304 part needs to be processed through electrolytic polishing and other techniques to achieve a surface state that is easy to clean and disinfect. Black POM must meet the standards of medical-grade raw materials, have no toxic leaching, and be resistant to the erosion of commonly used disinfectants.
2、Precision fit and dimensional stability: The mating interfaces between metal and plastic components (such as interference fit, snap-on connection, and threaded pair) need to maintain preload and accuracy under repeated disassembly and assembly as well as changes in temperature and humidity, to prevent loosening or jamming caused by the creep of POM or the difference in thermal expansion coefficients between SUS304 and POM.
3、Functional reliability: Components must ensure that under long-term load or cyclic movement, the wear resistance of POM parts and the fatigue strength of SUS304 meet the design life, and operate smoothly without noise.
4、Cleanliness and safety: The entire component must be free from any form of fiber shedding (especially POM parts), metal debris and dead corners. All edges and corners must be fully rounded to meet the cleanliness requirements of the medical environment.
Key processes and technologies
The realization of the above requirements relies on a series of targeted cross-material process controls:
1、Split precision machining
SUS304 component: Special stainless steel tools are used, and the cutting parameters are controlled to avoid work hardening. The key mating surfaces need to be finely ground or ground to achieve high dimensional accuracy and smoothness. After completion, thorough cleaning and passivation treatment should be carried out to form a stable passivation film.
Black POM component: It adopts sharp rake Angle tools, high-speed and fast feed processing, and is cooled by compressed air to prevent the material from overheating and melting. For the key parts of the mating dimensions, processing and measurement should be carried out in a constant temperature and humidity environment to compensate for the moisture absorption and expansion effect of the material.
2、Interface collaborative design and post-processing: During the design stage, tolerance optimization is carried out for the mating interface between SUS304 and POM, taking into account creep and thermal expansion. Appropriate surface treatments (such as specific plasma treatments) can be carried out on the mating surfaces of POM to fine-tune their surface energy. All components must undergo deep cleaning such as ultrasonic cleaning before assembly.
3、Precision assembly and verification: Assembly is carried out in a clean environment (such as a 10,000-level cleanroom). Use a constant torque tool to ensure the consistency of screw connections; For the press-fitting interface, a servo press is used to control the press-in speed and displacement. After assembly is completed, functional tests (such as smoothness of operation and sealing tests) and precision verification need to be carried out.
Conclusion
In conclusion, the manufacturing of complete sets of SUS304 and black POM assembly products for the medical industry goes beyond the scope of processing single materials and is a systematic project. It has successfully integrated the reliability of stainless steel with the functionality of engineering plastics. Through differentiated precision processing based on the physical and chemical properties of the two materials, as well as collaborative design and control of cross-material interfaces, it has ultimately achieved integrated functional components that meet the strict requirements of medical equipment. This "combination of rigidity and flexibility" solution not only optimizes the performance of the equipment and the user experience, but also reflects the important trend of modern medical equipment manufacturing towards lightweighting, modularization and humanization. It is the key to enhancing the overall reliability, safety and maintainability of medical equipment.
