1, Main advantages and characteristics of POM materials
High strength and rigidity: POM has mechanical properties similar to metals, with a tensile strength of 60-70MPa, while maintaining good rigidity, not easily deformed, and suitable for structural components that can withstand moderate loads.
Excellent wear resistance: POM has an extremely low friction coefficient (0.1-0.3) and good self-lubricating performance, which can be used for sliding parts without additional lubrication and has a long service life.
Dimensional stability: POM has very low moisture absorption (<0.3%) and will not expand in humid environments. After processing, it has stable dimensions and is very suitable for precision parts.
Chemical and fatigue resistance: POM has good resistance to most organic solvents, oils, and weak acids and bases, as well as excellent resistance to repeated impact and fatigue.
Good processing performance: POM is less prone to burrs during cutting, with a high surface finish, suitable for high-speed CNC milling, turning, and drilling.
2, Typical application scenarios
Transmission components: gears, worm gears, camshafts, synchronous pulleys, screw nuts, etc., utilizing their low friction and wear resistance characteristics to reduce noise and energy consumption.
Structural components: bearing cage, guide rail slider, roller, guide ring, sealing ring, etc., replacing metal to reduce weight.
Electronics and Electrical: Insulation gaskets, coil frames, connector housings, switch components, meet good electrical insulation and flame retardancy.
Medical and food machinery: POM meets FDA requirements and can be used for wear-resistant parts of non direct contact medical device components and food packaging machinery.
Automotive industry: fuel pump components, door lock actuator gears, seat belt retraction components, etc., resistant to oil and temperature changes.
3, Our customized services
Shenzhen StrongD Model provides one-stop CNC machining services from drawing evaluation to finished product delivery:
Drawing analysis and DFM recommendations: We evaluate the machinability of POM parts based on your 3D drawings (STEP/IGS), optimize details such as wall thickness, chamfers, threads, etc., to avoid stress concentration and deformation.
Material selection: Commonly used POM-C (formaldehyde copolymer) and POM-H (formaldehyde homopolymer). We recommend suitable models based on your application environment and provide a material property table.
Precision machining capability: 3-axis, 4-axis, and 5-axis CNC machining centers can complete complex surfaces, deep holes, threads, and other features with tolerances up to ± 0.02mm.
Surface treatment: POM parts can be sandblasted, deburred, ultrasonically cleaned, or dyed according to requirements (black, etc.).
Small batch and mass production: minimum order of 1 piece, flexible support for prototype verification, and cost reduction through process optimization during mass production.
4, Frequently Asked Questions (FAQ)
Q1: Is it easy for POM parts to deform after processing?
POM itself has low internal stress, but large-sized thin-walled parts may experience slight warping during cutting due to residual stress. We minimize deformation by optimizing tool paths, multiple clamping, and natural aging, and perform stress relief annealing if necessary.
Q2: Compared to nylon, which one is more suitable for gears?
POM has higher hardness, lower water absorption, and better dimensional stability, making it suitable for precision gears; Nylon has better toughness and strong impact resistance, but its size changes greatly after absorbing water. POM is generally recommended for precision transmission gears.
Q3: Without 3D drawings, can only samples be processed?
Sure, we provide reverse modeling services to obtain sample data through 3D scanning and regenerate it into a machinable 3D model, which requires an additional design fee.
Q4: Do POM parts need post-processing?
Remove burrs after regular processing; If special appearance is required, sandblasting or dyeing can be carried out; If used in contact with food, ultrasonic cleaning and disinfection are required.
Q5: What is your minimum order quantity?
There is no minimum order quantity for CNC machining, and a single sample can be produced. Batch orders (≥ 100 pieces) can enjoy more favorable unit prices.
Q6: What is the temperature resistance of POM parts?
The long-term use temperature of POM is -40 ° C to 100 ° C, and it can withstand 120 ° C in the short term. Beyond this range, it will soften or decompose.
With years of experience in CNC precision machining, Shenzhen StrongD Model has become a trusted POM parts manufacturer for many customers. Whether it's prototype validation or mass production, we can meet your needs with high precision, fast delivery time, and reasonable cost. Welcome to send drawings for consultation!
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