Plastic screw, as a key component in plastic processing equipment, is widely used in injection molding machines, extruders and other equipment, and is responsible for conveying, plasticizing and injecting plastic raw materials. Its quality and performance directly affect the quality and productivity of plastic products. Therefore, it is especially important to customize plastic screws to meet specific needs.
1. Plastic screw production process
(1) Raw material selection and preparation
According to customer requirements to select the appropriate plastic raw materials, such as PVC, PP, PE, PC, etc..
Pre-treatment of raw materials, such as drying, removing impurities, etc., to ensure the quality of raw materials.
(2) Screw design
According to the plastic type, processing temperature, injection pressure and other parameters provided by the customer, carry out the structural design of the screw.
Determine the screw’s aspect ratio, compression ratio, thread shape and other key parameters.
(3) Precision processing
Adopt high-precision CNC machine tools for precision machining of the screw to ensure the dimensional accuracy and surface finish of the screw.
Heat treatment of the screw to improve the hardness and wear resistance of the screw.
(4) Quality Inspection
Carry out quality inspection on the finished screws, including size measurement, hardness test and wear resistance test.
Ensure that the quality of screws meets the requirements of customers.
(5) Packing and delivery
Pack the qualified screws to ensure that they are not damaged during transportation.
Ship the products according to the time required by customers.
2. Plastic screw customization
(1) Customer demand analysis
Communicate with customers to understand their specific needs, such as plastic type, processing temperature, injection pressure and so on.
According to the customer’s needs, make a detailed screw customization plan.
(2) Material selection
According to the customer’s needs and plastic types, select the appropriate screw material.
Consider the material’s heat resistance, wear resistance, corrosion resistance and other characteristics.
(3) Structural design
According to customer needs and plastic processing principles, carry out the structural design of the screw.
Determine the screw’s aspect ratio, compression ratio, thread shape and other key parameters.
(4) Processing and testing
Adopt high-precision CNC machine tools to process the screw.
Conduct quality test on the finished screw to ensure that the quality meets the customer’s requirements.
(5) After-sales service
Provide installation guidance and technical support for the screw.
Solve the problems encountered by customers in the process of use in a timely manner.
3. Plastic screw material introduction
Material: PVC, PP, PE, PC, etc.
Characteristics:
PVC: with good corrosion resistance and mechanical properties, suitable for chemical transmission equipment, plastic extruders and pressure vessels and other fields.
PP: excellent acid and alkali resistance, high temperature performance and mechanical properties, suitable for corrosion-resistant, high-temperature industries, such as chemical, food, medicine and so on.
PE: with excellent chemical inertness and high toughness, easy to use, suitable for occasions requiring toughness and durability, such as water treatment, environmental protection, metallurgy and so on.
PC: with high physical strength and high temperature resistance, suitable for high wear resistance, high temperature, high strength, cold resistance performance requirements of the industry, such as electronics, machinery, automotive and so on.
4. Characteristics of plastic screws of different materials
Note: The above data is an approximate range, the specific value may vary depending on the material formula, processing technology and other factors.
Customized Plastic Screw FAQ
Q1: How to determine the required plastic screw material?
A1: According to the type of plastic, processing temperature, injection pressure and other parameters, as well as the material’s heat resistance, abrasion resistance, corrosion resistance and other characteristics, select the appropriate screw material.
Q2: How long does it take to customize the plastic screw?
A2: The time for customized plastic screw depends on many factors such as customer demand, material selection, processing equipment and so on. Generally speaking, it takes several weeks to several months from the analysis of customer demand to the completion of screw processing.
Q3: How to ensure the quality of customized plastic screws?
A3: During the customization process, we use high-precision CNC machine tools for machining, and conduct quality inspection on the screws to ensure that the dimensional accuracy, surface finish and performance meet customer requirements. At the same time, we provide after-sales service to solve the problems encountered by customers in the process of use in a timely manner.
Q4：How to calculate the price of customized plastic screw?
A4: The price of customized plastic screw depends on many factors such as material selection, processing difficulty, quantity and so on. We will provide a detailed quotation according to the customer’s requirements and produce it after the customer’s confirmation.
