Injection Moulding With Metal Insert

In the field of precision structural component manufacturing, a single material often fails to meet the composite requirements of "high-strength connection+complex structural forming". Metal insert injection molding (commonly known as "insert injection molding") is a "plastic metal integration" process that precisely fixes prefabricated metal inserts (such as nuts, bolts, terminals) in a mold, and then injects molten plastic to wrap them, ultimately forming a "metal reinforced, plastic molded" composite product. This technology not only retains the core properties of high strength and high conductivity of metals, but also leverages the advantages of lightweight and complex structure of plastics, completely replacing the inefficient mode of traditional "injection molding before assembling metal parts". It is widely used in fields such as automobiles, electronics, and home appliances that require high connection strength and integration.

Metal insert injection molding refers to the injection molding process that uses prefabricated metal inserts (such as brass nuts, stainless steel bolts, copper terminals, etc., which need to be processed into specific shapes in advance) and thermoplastic materials (such as PA, POM, ABS, etc.) as raw materials, and through the process of "insert positioning → mold clamping → plastic injection → cold curing → product demolding", firmly combines metal inserts with plastic. Its core goal is to achieve "one-time molding of plastic structures+precise embedding of metal components" while meeting the functions of the product (such as threaded connection, conductivity, and load-bearing), eliminating the risk of gaps and looseness in traditional assembly, and improving production efficiency and product reliability.

P&M Injection Moulding With Metal Insert Introduction

1. Preliminary Preparation: Pre processing of Embedded Components and Debugging of Molds (Key Fundamentals)

Pre preparation directly affects the quality of subsequent molding, and special attention should be paid to the processing of inserts and the accuracy of molds.

Pre treatment of metal inserts:

Cleaning and degreasing: Metal inserts may have residual oil stains and iron filings during processing, which need to be thoroughly cleaned by ultrasonic cleaning (using neutral degreasing agent, temperature 50-60 ℃, time 5-10 minutes) or solvent wiping (such as alcohol) to avoid oil stains affecting the bonding between plastic and metal (oil stains can cause bubbles and delamination on the bonding surface);

Surface treatment (as needed): Based on the type of plastic and the requirements of the working conditions, surface treatment is carried out on the inserts, such as nickel plating on brass inserts (to improve corrosion resistance and bonding strength), passivation of stainless steel inserts (oxidation prevention), and galvanizing of iron inserts (rust prevention). After treatment, it is necessary to ensure that the surface is free of impurities and the roughness meets the standard;

Size screening: Use calipers or automated screening equipment to check the size of the insert (such as nut inner diameter, terminal thickness), remove out of tolerance products (size tolerance should be controlled within ± 0.03mm), and avoid positioning failure caused by inaccurate insert size;

2. Embedded positioning: Automated feeding and precise fixation (core process)

Embedded positioning is the "lifeline" of embedded injection molding, and positioning deviation can directly lead to product scrap. It is usually achieved through automated equipment:

3. Plastic injection: parameter control adapted to metal properties (key link)

The high thermal conductivity of metal inserts can alter the filling and cooling behavior of plastics, requiring targeted adjustment of injection molding parameters.

4. Pressure holding and cooling: Ensure tight bonding and dimensional stability (core guarantee)

Pressure maintenance and cooling need to balance the "plastic shrinkage compensation" and "metal thermal conductivity influence" to avoid gaps at the joint surface.

5. Demoulding and post-treatment: protect composite products and test key performance

Demoulding should avoid separation between the embedded parts and the plastic, and post-processing should focus on bonding quality and dimensional accuracy.

P&M Injection Moulding With Metal Insert(Specification)

P&M Injection Moulding With Metal Insert Feature And Application

1. Automotive field: high-strength components that can withstand harsh working conditions

The automotive industry is the core application scenario for metal insert injection molding, which needs to cope with harsh environments such as vibration, high and low temperatures, and oil pollution.

2. In the field of electronics and home appliances: high-precision connection and conductive integration

The field of electronics and home appliances requires "miniaturization, high integration, and low failure", and metal insert injection molding can achieve precise connection and functional integration.

3. Industrial and mechanical fields: load-bearing and wear-resistant composite components

In the field of industrial machinery, high load-bearing capacity, high wear resistance, and long service life are required. Metal injection molding can replace some metal components to achieve lightweight and cost optimization.

4. Medical equipment field: safety and precision composite components

Medical equipment needs to be "sterile, corrosion-resistant, and reliably connected", and metal insert injection molding can meet medical grade safety standards.

5. Consumer and smart home fields: components that balance hand feel and durability

Consumer and smart home products require "good hand feel, good appearance, and strong durability", and metal insert injection molding can enhance product texture and lifespan.

Customization Process

Factory&About US

NingBo Plastic Metal Product Co.,Ltd (P&M) is located in Yuyao, the so-called Mould City, Plastic Kingdom, in the southern tip of Hangzhou Bay Bridge,north of Shanghai, the east of Ningbo Port,tight double line of State Road 329 on land, sea and air trafic into a network to facilitate transport.

By the abundant technical strength,scientific management methods and good after-sales service, product deeply trusted and welcomed by customers from all over the world. P&M holds improved system of development and production, to achieve mold design, plastic products manufacturing and automatic production. Our main products is design and manufacturing of plastic mold, plastic product, metal product. 90% products of our enterprise are exported to America, Europe, Germany, Japan, Australia, etc. For many years, the company has been committed to the research of raw materials. The company has its own trademark and dozens of patents, providing more convenient technical support for mold making and product production. P&M started domestic business from 2008,named Shundi Mould Factory. And opened the international market from 2014. We always adhere to the principles of quality first and time first. While providing customers with the highest quality products, try to maximize the production efficiency and shorten production time. We are proud to tell every customer that our company has not lost any customer since its establishment.If there is a problem with the product, we will seek a solution actively and take responsibility to the end.

P&M adheres to market-oriented to the quanlity of life and focus on quality service and continuous development of new products,determined to establish a better corporate image,and our friends at home and abroad to carry a wide range of business exchanges and cooperation, create brilliant.

Packing

Packaging according to your needs

1. By air ,it takes 3-7 days for delivery.

The goods can be shipped by DHL , Fedex , UPS .

2. By sea ,the delivery time is based on your port.

To South East Asian Countries takes about 5-12 days.

To Middle east countries takes about 18-25 days.

To European countries takes about 20-28 days.

To American countries takes about 28-35 days.

To Australia takes about 10-15 days.

To African countries takes about 30-35 days.

P&M Bike parts, centered around children, balances safety, health, and fun, aiming to add a bright color to children's beautiful childhood. We look forward to working together with you to serve our children.

The path of a child's growth is paved with bricks and tiles.

FAQ

1.Who are we?

We are based in Zhejiang, China, start from 2014,sell to North America(30.00%),Southern Europe(10.00%),Northern Europe(10.00%),Central America(10.00%),Western Europe(10.00%),Mid East(10.00%),Eastern Europe(10.00%),South America(10.00%). There are total about 51-100 people in our office.

2.How can we guarantee quality?

Always a pre-production sample before mass production;

Always final Inspection before shipment;

3.What can you buy from us?

Mould, Plastic Product, Metal Product, Dental Product, CNC machining.

4.Why should you buy from us not from other suppliers?

We main do all kinds of 3d design, 3d printing and plastic metal molds tooling and products. We have our own engineer and factory. One-stop supply: 3d design - 3d printing - mold making - plastic injection.

5.What services can we provide?

Accepted Delivery Terms: FOB,CFR,CIF,EXW,FCA,DDP,DDU;

Accepted Payment Currency: USD, EUR;

Accepted Payment Type: T/T,L/C,PayPal,Western Union,Escrow;

Language Spoken:English,Chinese,Spanish,French,Russian.

6.What are the characteristics of your service?

1. Your inquiry related to our products or prices will be replied within 24 hours.

2. Well-trained and experienced staffs to answer all your enquiries in fluent English.

3. Offering the support to solve the problem in the application or selling period.

4. Competitive prices based on same quality.

5. Guarantee samples quality same as mass production quality.