Blue POM Sheet

5 month ago

18 0 

2 year

Product details

Blue POM Sheet (Polyoxymethylene Sheet) is a highly crystalline thermoplastic engineering plastic sheet made from POM resin through extrusion molding. It boasts excellent core properties and a unique color advantage.

Its mechanical properties are outstanding, with high rigidity and strength, approaching that of some metals. It exhibits excellent creep resistance and wear resistance, a low coefficient of dynamic friction, and self-lubricating properties, allowing for long-term stable operation without additional lubrication. Its wear rate is significantly lower than similar engineering plastics.

Its dimensional stability is excellent, with virtually zero water absorption. Even in humid environments or under fluctuating temperatures (-50℃ to 100℃), it does not easily expand or deform, making it suitable for precision machining requirements. It has good chemical stability, tolerating most non-polar solvents, dilute acids, and dilute alkalis. It exhibits excellent hydrolysis resistance, requiring only avoidance of strong corrosive media such as concentrated acids and strong oxidants. Its processing performance is excellent; it can be machined into complex precision parts using conventional machining methods such as milling and drilling, resulting in smooth surfaces and high precision.

In terms of color, the blue POM sheet (Polyacetal Sheet) is a uniform deep blue that does not fade or peel, combining aesthetics and recognizability. In addition to its decorative function, it can also facilitate the quick differentiation of parts in industrial settings, making it suitable for a variety of precision manufacturing scenarios.

Core Characteristics of POM Sheets

The characteristics of POM sheets can be summarized as high rigidity, high strength, high wear resistance, excellent dimensional stability, self-lubrication, and good chemical corrosion resistance:

Outstanding Mechanical Properties: Tensile strength reaches 60-70 MPa, elastic modulus is approximately 2800 MPa (far exceeding ordinary ABS), high hardness, creep resistance (no deformation under long-term stress), and excellent fatigue resistance (not easily damaged by repeated friction), earning it the reputation of "Iron Man of the plastics world."

Good Dimensional Stability: Low water absorption (weak water absorption), minimally affected by temperature and humidity, does not easily expand or shrink over long-term use, suitable for precision parts manufacturing.

Excellent Self-Lubrication: Dynamic friction coefficient is only 0.1-0.2 (lower than nylon and polyethylene), allowing stable operation in sliding contact parts without additional lubrication, reducing wear.

Chemical Corrosion Resistance: Resistant to solvents, oils, and weak acids and alkalis, but not resistant to strong acids and alkalis (such as concentrated sulfuric acid and sodium hydroxide) and long-term ultraviolet radiation (will yellow and age).

Excellent machinability: It can be formed by turning, milling, drilling, hot pressing and other processes, making it suitable for manufacturing precision parts with complex shapes (such as gears and sliders).

POM Sheet, some called it Delrin Sheet

Combining the performance characteristics (high rigidity, wear resistance, self-lubrication, dimensional stability, chemical resistance, and ease of processing) and color characteristics (bright blue, uniform, and highly recognizable) of blue POM sheets, their core application areas are as follows:

Precision Machinery Manufacturing: Used for transmission parts such as gears, bearings, and sliders. Leveraging its wear resistance, self-lubrication, and dimensional stability, it can operate stably for extended periods without additional lubrication, meeting the needs of precision equipment.

Automotive Industry: Manufactures interior trim clips, gearbox gaskets, steering system components, etc. Utilizing its creep resistance, temperature resistance (-50℃ to 100℃), and ease of processing, it is suitable for the complex operating conditions of automobiles.

Electronics and Electrical Engineering: Produces precision insulating parts, terminals, and instrument housings. Its dimensional stability, moisture resistance, and good insulation properties ensure the precision and safety of electronic equipment.

Chemical Equipment Industry: Manufactures corrosion-resistant gaskets, pipeline fittings, etc., resistant to most non-polar solvents, dilute acids, and dilute alkalis, suitable for mildly corrosive environments.

Food Machinery / Medical Devices: Precision parts used in food and medical applications, utilizing non-toxic, hydrolysis-resistant, and easy-to-clean properties to balance hygiene and precision.

Decorative and Identification Scenarios: Taking advantage of the uniform and fade-resistant bright blue color, decorative parts for equipment and industrial scene identification are created, facilitating quick identification of parts while combining aesthetics and practicality.

Blue POM sheets are characterized by high hardness, good toughness, self-lubrication, and extremely low water absorption. They can be processed using conventional metal/plastic processing equipment, but cutting parameters and heat dissipation must be carefully controlled to ensure accuracy, prevent deformation, and avoid edge chipping.

1. Common Processing Methods

Cutting Processes (Turning, Milling, Drilling)

Suitable for manufacturing gears, sliders, bushings, and precision structural parts.

Air cooling or a small amount of cutting fluid is recommended during processing to keep the tool and sheet material at a low temperature and prevent thermal deformation.

Cutting Processes

Thin sheets can be cut using precision panel saws or laser cutting (pay attention to power control to avoid yellowing or charring of edges).

For thick sheets, band saws and circular saws are preferred, as they provide stable cutting, smooth cut surfaces, and are less prone to chipping.

Drilling and Tapping

High-speed steel drill bits are recommended for drilling, as they ensure smooth chip removal and reduce burr formation.

For tapping, pre-drilling pilot holes is recommended. POM has high strength and good toughness, resulting in full thread formation and reducing the likelihood of cracking.

Bonding and Welding

Special POM adhesives can be used, or hot air welding and hot plate welding can be employed. The strength is close to that of the POM itself, making it suitable for structural splicing and sealing component fabrication.

2. Processing Precautions:

POM does not absorb water and does not require drying before processing; it can be directly applied to the machine.

Avoid prolonged high-speed friction to prevent heat generation and slight softening of the material, as well as dimensional deviations.

After processing, the dimensions are stable and it is not prone to springback, making it suitable for precision assembly.

The blue color is uniform throughout; the cross-section remains a uniform blue after processing, without whitening or exposed substrate.

3. Suitable Parts for Processing

Precision gears, bearing sliders, guide rail gaskets, jigs and fixtures, food machinery parts, automated structural components, etc. It is highly suitable for applications requiring wear resistance, precision, rigidity, and a suitable appearance.