High Temperature Resistant POM Injection Molding Parts

POM (Polyoxymethylene) POM, POM is a hard and dense material with smooth and shiny surface, light yellow or white, and can be used for a long time in the temperature range of -50-110°C. The wear resistance and self-lubrication of the high temperature resistant POM injection molding parts are also superior to most engineering plastics, and they have good oil resistance and peroxide resistance. It is not resistant to acid, alkali and ultraviolet radiation.

The melting point is: melting point 175°C, softening point: 150°C, heat distortion temperature HDT: 155°C, in conclusion, the high temperature resistance of POM is about 110°C, which should not exceed the softening point.

The main products of Zhongwei Precision Machinery Co., Ltd. are nylon products, plastic products, ABS series, rubber products, etc. Types of injection molding materials that can be processed: polyethylene (PE), polypropylene (PP), nylon (PA, PA6, PA66), polyoxymethylene (POM), ABS, polyurethane (TPU), polyphenylene sulfide (PPS), polystyrene Carbonate (PC), Polyetheretherketone (PEEK), etc.

Product Description

1. Implementation standards: the company strictly implements ISO9001, ISO14001, IATF16949, VDA6.3 certification, and products have passed ROHS, FDA EU certification, etc.

2. Product material standards: ISO, GB, ASTM, SAE, EN, DIN, BS, AMS, JIS, ASME, DMS, TOCT, GB

3. Main processes: plastic injection molding, metal insert injection molding, investment casting, die-casting aluminum,

4. Available materials for injection molding:

Processable nylon products, plastic products, ABS series; injection molding material types: polyethylene (PE), polypropylene (PP), nylon (PA, PA6, PA66), polyoxymethylene (POM), ABS, polyurethane (TPU), poly Phenyl sulfide (PPS), polycarbonate (PC), polyether ether ketone (PEEK) and 3D printing can be customized according to customer requirements.

The difference of emperature resistant POM injection molding parts

1. The difference between different types of POM

POM is divided into copolyformaldehyde and homopolyformaldehyde

(1) Copolyformaldehyde is more flexible than homopolyformaldehyde.

(2) Copolyformaldehyde is better than homopolyformaldehyde in hot water resistance and alkali resistance.

(3) The melting point of homopolyoxymethylene resin is about 10°C higher than that of copolyoxymethylene resin, and the heat distortion temperature is also higher.

(4) Homopolyacetal resin has higher rigidity, better mechanical properties such as fatigue resistance, repeated impact and abrasion resistance than copolyformaldehyde resin.

(5) Among the general grades, the weather resistance of copolyformaldehyde is slightly better than that of homopolyformaldehyde.

2. The temperature resistance of POM

There are still many types of POMs that can withstand temperatures above 120 degrees, and there are those that do not add fiber. So how much temperature can POM withstand?

(1) Homopolyoxymethylene non-modified POM

Melting point 175°C, softening point: 160°C, heat distortion temperature HDT: 165°C, so the short-term heat resistance of homopolymer POM is more than 10°C higher than that of copolymerized POM, which can reach 120 degrees, but the long-term heat resistance of copolymerized POM is more than average. Poly POM is about 10°C higher. Can be used for a long time in the temperature range of -40℃～100℃

If it is specially modified (glass fiber reinforced, mineral fiber reinforced), it can reach about 150

(2) Copolyformaldehyde non-modified POM

The melting point is: melting point 165°C, softening point: 150°C, heat distortion temperature HDT: 155°C, in summary, the high temperature resistance of POM is about 110°C, the long-term heat resistance of POM is not high, but it can be used in the short term. up to 160°C, do not exceed the softening point

Conclusion: The temperature resistance of the copolymerized polyoxymethylene POM is 110 degrees, the temperature of the homopolyoxymethylene POM is 120 degrees, and the long-term working temperature range of the POM is -50 °C to 100 °C. The long-term use temperature of modified POM is between -60 and 160 degrees.

Post Injection Molding Process

1. Processing equipment: CNC, WEDM, lathe, milling machine, drilling machine, grinder, etc.;

2. Surface treatment: For some products that require subsequent processing, we can provide surface treatment services to achieve the special purpose of customers. At present, we can provide degreasing, polishing, electroplating (gold, silver, nickel, tin, galvanized, etc.), anodizing, electrophoresis and other surface treatment services for precision parts.

Moulds and Inspection Fixtures

1. Mold service life: usually semi-permanent. (except for lost foam)

2. Mold delivery time: 10-25 days, (according to product structure and product size).

3. Tooling and mold maintenance: Zhongwei is responsible for precision parts.

Quality Control

1. Quality control: the defective rate is less than 0.1%.

2. Samples and trial run will be 100% inspected during production and before shipment, sample inspection for mass production according to ISDO standards or customer requirements

3. Testing equipment: automated visual inspection equipment can carry out 100% inspection of products, spectrum analyzer, golden elephant analyzer, three-coordinate measuring machine, hardness testing equipment, tensile testing machine.