Detailed explanation of the process flow of fuse manufacturing

With the popularity of electronic equipment, fuses are an important component of circuit protection, and their manufacturing processes have attracted much attention. This article will comprehensively introduce the process flow of fuse manufacturing and help readers gain an in-depth understanding of the production process and quality control points of fuses.

1. Overview

The fuse is a component used to protect the safety of the circuit. When the current exceeds the set value, the fuse will blow, thereby cutting off the circuit and preventing equipment damage. The manufacturing process of fuses is complex and involves many aspects such as material selection, processing and molding, testing and packaging. Scientific and reasonable process flow not only ensures stable performance of fuses, but also improves production efficiency and product quality.

2. Core contents of the fuse manufacturing process

1. Material preparation

The main materials of the fuse include the fuse and the casing. Fuse wires are usually made of copper, silver, zinc alloy and other metals, which require high purity and good mechanical properties. The shell materials are usually ceramic, glass or plastic, and must have good insulation and heat resistance. The material preparation stage requires strict testing to ensure compliance with process requirements.

2. Drawing and cutting of fuse wire

The fuse wire stretches the thick wire to the designed diameter through the drawing process to ensure that itresistanceand fusing characteristics. After drawing is completed, precise cutting is performed according to the designed length. The cutting length directly affects the current capacity and fusing time of the fuse.

3. Forming and fixing of fuse wire

The cut fuse wire needs to be shaped according to the designed shape, such as straight, wavy or spiral. After forming, fix the fuse wire on the bracket or end cap inside the fuse housing to ensure the stable position of the fuse wire and avoid malfunction due to vibration or impact.

4. Assembly of housing

According to different types of fuses, the shell assembly process is different. Glass fuses require the fuse wire to be installed into a glass tube and then sealed; ceramic fuses require the fuse wire to be embedded in the ceramic shell and sintered at high temperature. Sealing and insulation properties must be ensured during assembly.

5. Atmosphere filling and sealing

Some fuses are filled with inert gases (such as nitrogen, argon) to improve fusing performance. After filling the atmosphere, it must be tightly sealed to prevent gas leakage and external impurities from entering, so as to ensure the long-term stable operation of the fuse.

6. Surface treatment and marking

After assembly is completed, the surface of the fuse is usually coated to prevent corrosion, and identification such as model number and current specifications are printed on the casing to facilitate subsequent identification and use.

7. Quality inspection

Quality inspection is a key link to ensure the performance of fuses. The inspection content includes appearance inspection, dimensional measurement, fusing current test, withstand voltage test and mechanical strength test. Only after passing the test can the packaging process be entered.

8. Packaging and shipping

After rigorous testing, the fuses are packaged according to customer requirements to prevent damage during transportation. Packaging usually uses moisture-proof and shock-proof materials to ensure safe delivery of products.

three,

The fuse manufacturing process covers material preparation, fuse wire drawing and cutting, molding and fixing, shell assembly, atmosphere filling, surface treatment, quality inspection and packaging. Every step is closely coordinated to ensure that the fuse has excellent electrical and mechanical properties. With the continuous advancement of technology, the fuse manufacturing process is also continuously optimized to meet higher standards of safety protection needs. Understanding and mastering these processes will help improve product quality and promote the healthy development of the electronic components industry.