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Quality Defects and Solutions in Precision Injection Molding Products
In precision injection molding production, product quality directly impacts a company's market competitiveness. While the development of intelligent manufacturing technology in the new era has significantly improved production precision, some common quality defects still exist. The following analyzes the causes of specific defects and provides solutions. I. Dimensional Accuracy Deviation 1. Defect Manifestation: Critical dimensions of the product exceed tolerance ranges (e.g., ±0.01mm),...
Do you know the seven main components of a plastic injection mold?
According to its function, the basic structure of an injection mold can be divided into seven parts: gating system, molding parts, side parting line, guiding mechanism, ejection device and core-pulling mechanism, cooling and heating system, and venting system. These seven parts are explained below: 1. Gating System: This refers to the plastic flow channel in the mold from the injection nozzle to the cavity. A typical gating system consists of the main runner, branch runners, gate, and cold...
Advantages of PC PC is an amorphous thermoplastic resin with excellent comprehensive performance. It possesses superior electrical insulation, elongation, dimensional stability, and chemical corrosion resistance, as well as high strength, heat resistance, and cold resistance. It also has advantages such as self-extinguishing, flame retardancy, non-toxicity, and colorability. PC plastic can be found in almost every aspect of your life. Its large-scale industrial production and ease of...
Injection molds are one of the core pieces of equipment in industrial manufacturing, with a wide range of applications. They are essential tools in industries such as electronics, automobiles, medical devices, and communications, holding a significant position in many related sectors. Driven by continuous technological innovation and changing market demands, the injection mold industry is constantly ushering in new development opportunities. I. Market Opportunities in the Injection Mold...
Prevention of Common Decomposition Phenomena in PVC Injection Mold Processing
PVC, a commonly used thermoplastic in industrial fields, is widely used in pipes, fittings, and profiles due to its low cost and good moldability. However, it has an inherent characteristic of poor thermal stability—its molding temperature range (160-200℃) is close to its decomposition temperature. If not controlled properly during injection mold processing, decomposition can occur. This decomposition not only causes yellowing and scorch marks on the product surface but also produces HCl...
Mold Flow Analysis: A Core Technology for Optimizing Injection Mold Defects
In modern injection molding production, mold defects leading to high product defect rates, material waste, and production stoppages are common pain points in the industry. Industry statistics show that molds without mold flow analysis optimization have an initial trial pass rate of only 40%-50%, while common defects directly reduce production efficiency by more than 30%. Mold flow analysis, based on computational fluid dynamics (CFD) and thermodynamics principles, can accurately simulate the...
Analysis of the Eight Core Systems of Injection Molds for plastic parts
The stable operation of injection molds relies on the coordinated operation of eight core systems. Each system independently performs a specific function, yet they are interconnected to form a closed loop, directly determining the molding accuracy, production efficiency, and mold lifespan. Spline testing molds, as specialized equipment for material performance testing, emphasize standardization, high precision, and stability in their eight system designs, serving as a typical vehicle for...
With the rapid development of the food delivery economy and the pre-prepared food industry, and the deepening implementation of environmental protection policies, the demand for lightweight, efficient, safe, and compliant packaging products in the food packaging industry continues to rise. Thin-wall injection molds, with their core advantages such as short molding cycles, high material utilization, and low production costs, have become core production equipment for food packaging such as...
Hot runner precision injection molds: a solution for molding complex plastic parts
In industries such as 3C electronics, medical devices, and automotive precision components, the application of complex structural parts is becoming increasingly widespread. Their molding process faces challenges such as complex cavities, uneven wall thickness, high dimensional accuracy requirements, and difficulty in controlling mass production stability. Hot runner precision injection molds, with their core advantages of efficient temperature control, waste-free runners, and uniform...
The material selection and heat treatment process for custom-made plastic molds for home appliances directly determine the mold's molding precision, service life, and production stability. Currently, the home appliance industry is transforming towards lightweight, precision, and intelligent manufacturing. Molds need to be compatible with various plastic materials such as ABS, PC, PP, and PA + glass fiber, while simultaneously meeting the requirements of wear resistance, deformation...
An injection molding machine is a processing equipment that uses plastic molds to create various shapes of plastic products from thermoplastic or thermosetting plastics. HUIWEN is a company specializing in plastic gear injection molding and owns 37 injection molding machines. Kehua engineers share some knowledge about the types of injection molding machines: Plastic Gear Injection Molding Machines 1. Classification by the power source for mold closing: A. Mechanical injection molding...
What parameters affect the injection molding of plastic parts?
The production process of plastic products, such as plastic gears, requires equipment such as plastic molds, plastic raw materials, injection molding machines, mold temperature controllers, dryers, and robotic arms. Once the equipment is fixed, the factors affecting the quality of the plastic product are the injection molding parameters. Next, engineers from HUIWEN Injection Molding Plant will share knowledge about injection molding parameters. Plastic Injection Worm Gear 1. Injection...
Why are plastic injection molded scalp massagers becoming increasingly popular?
The pandemic, the US dollar tightening, the udon noodle wars—the world is in turmoil. Many companies have announced layoffs, and some brick-and-mortar stores have simply closed down. How businesses can survive this harsh winter is a major test for business owners. They work from dawn till dusk, holding meetings with key personnel during the day to discuss how to increase revenue and reduce costs, how to transform and upgrade their businesses, and how to sell products. Disagreements are...
Why Should Plastic Gear Injection Molding Plants Implement 5S Management?
Why Should Plastic Gear Injection Molding Plants Implement 5S Management? Plastic gears are very precision parts. To produce high-quality plastic gears, in addition to excellent injection molding machines, mold processing equipment, and gear testing equipment, factory management, especially 5S management software, is also crucial. Here, HUIWEN will discuss with you why plastic gear injection molding plants should implement 5S management. 1. What is 5S? 5S management is the foundation of...
Types and Selection of Plastic Injection Mold Materials for plastic parts products
Types and Selection of Injection Mold Steel: HUIWEN Plastics uses many types of steel for manufacturing plastic injection molds, each with different processing performance and market supply prices. 1. Alloy Structural Steel Alloy structural steel offers better performance than carbon structural steel, resulting in longer service life for injection mold components. Classified by main alloying elements, alloy structural steels used in plastic molds can be categorized as chromium steel,...
Are you familiar with the applications of new injection molding technologies?
HUIWEN Precision Injection Molding Manufacturer states that with the increasingly widespread application of plastic injection molding products and the rapid development of plastic molding technology, people's requirements for plastic products are also getting higher and higher. In recent years, scientific and technological workers in the plastic molding field have conducted in-depth discussions, research, and practice on how to expand the application scope of injection molding, shorten the...
What are the characteristics of heat treatment for cold-work injection mold materials?
Heat treatment characteristics of cold-work injection mold materials: 1. The heating process for cold-work mold steel is best carried out slowly, using preheating or a gradual, stepped temperature increase. This is because the material contains a large number of various alloying elements, resulting in complex alloying and relatively poor thermal conductivity. 2. Advanced heating equipment and methods are generally used during heating. Attention should be paid to the heating medium to...
Precision Requirements for Plastic Mold Parts
To ensure the proper operation of the plastic mold, the punch and die inserts must fit together. During the design phase, dimensions and tolerances must be strictly adhered to. The perpendicularity between the insert surface and the cutting edge must not exceed 0.01 mm, and there should be no reverse taper, looseness, or overlapping insert seams. Unless the design specifically allows welding, welding is generally not permitted for the fixing parts of the inserts and cutting edges, as some...
Installing and debugging a plastic mold is an important inspection process. It effectively identifies problems with the mold and the produced parts, allowing for targeted modifications to ensure the mold meets requirements. So, what preparations are needed before mold installation and debugging? During the manufacturing process, pay attention to the personal safety of workers, ensuring the integrity of the mold and equipment to prevent damage. Ensure the machine's functions are under the...
What are the key control points for plastic parts and plastic molds?
After the plastic mold is manufactured, it needs to be tested and inspected. Only when it is confirmed to be completely problem-free can it be used for mass production. Whether the mold is being tested or in formal production, mold control is essential to ensure normal production and mold quality. So, what are the key control points for molds? The quality of plastic parts requires key control, mainly divided into dimensional tolerances and appearance quality control. The dimensions of the...
The main purpose of annealing plastic molds is to eliminate internal stress caused by various factors, ensuring the parts meet usage standards, eliminating obvious defects in appearance, and improving the performance of the mold steel to facilitate subsequent processing. Annealing makes the internal metal structure of the mold more stable and balanced, guaranteeing the quality of subsequent processing and final heat treatment. Annealing is the process of transforming pearlite in the mold...
High-difficulty two-color and multi-color injection molding technology? For those confused, let's learn together with HUIWEN Plastics. HUIWEN Plastics, a custom manufacturer, possesses innovative injection molding technology that can combine two, three, four, or more colors of materials into a single product. This allows products to meet both diverse color requirements and varied functional needs—this is the high-difficulty two-color and multi-color technology. HUIWEN Plastics, a custom...
HUIWEN tells you about the classifications of plastic injection molding for plastic parts products
Classifications of Plastic Injection Molding Common household appliance casings and precision medical injection molded parts are all injection molded. HUIWEN tells you about the classifications of plastic injection molding. Injection molding is a method of industrial product manufacturing. Products are usually made using rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding compression molding and die casting. HUIWEN tells you...
Characteristics of Precision Medical Injection Molded Parts plastic parts
HUIWEN Plastic Parts shares the characteristics of precision medical injection molded parts. Why do many medical industry-related machine parts choose to be customized with precision medical injection molded parts? It's actually related to the characteristics of precision medical injection molding. Let's take a look. HUIWEN shares the characteristics of precision medical injection molded parts: 1. Complex Shapes: Some products, such as automotive body panels, aircraft parts, toys, and...
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