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03

2023

Precision hardware processing technology and operating specifications

Precision hardware can be cut according to production needs, and then some small parts can be processed by gong cutting or CNC processing. Precision hardware containers must be made by using a cutting punch, followed by welding, sanding, and oil spraying before the parts are made. The following editor will introduce you to the content of precision hardware processing technology and operating specifications. Welcome to read!

03

2023

Causes and Solutions of Scratches on the Bending Surface of Metal Stamping Parts

When continuous operations are performed on soft materials such as copper and aluminum alloys for stamping and bending, metal particles or residues can easily adhere to the surface of the work site, causing large scratches on the object. At this time, carefully analyze the shape of the work site, lubricating oil, and other conditions to avoid generating particles and residues in the blank, causing scratches.

03

2023

Two Cases of Rust on Stainless Steel Chassis and Cabinet

Stainless steel cabinets are made of stainless steel as the main material, which has outstanding functions in terms of rust prevention and corrosion. They can be kept as they are in both acidic and alkaline environments, but this does not mean that stainless steel cabinets are truly "rust free". Common cases of "rust" in stainless steel cabinets include intergranular corrosion and uniform corrosion. 1、 Intergranular corrosion is a type of localized corrosion. Corrosion that propagates inwardly along the boundaries between metal grains. This is mainly due to differences in chemical composition between the surface and interior of the grains, as well as the presence of impurities or internal stresses at the grain boundaries. Intergranular corrosion destroys intergranular bonding, greatly reducing the mechanical strength of stainless steel, and weakening its mechanical properties. "After corrosion occurs, the surfaces of metals and alloys still maintain a certain metallic luster, with no sign of damage. However, the intergranular bonding force is significantly weakened, and the mechanical properties deteriorate, making them unable to withstand percussion. Therefore, it is a very dangerous type of corrosion.". Intergranular corrosion of stainless steel welds is a major issue in chassis and cabinets.

03

2023

What materials are commonly used in sheet metal processing

Sheet metal processing refers to the processing of metal plates to obtain the desired appearance, which mainly involves the processing of sheet metal chassis, sheet metal server cabinets, and various mechanical equipment internal structures and chassis sheet metal parts. Many devices in daily life are processed in that way, such as bank registration machines, automatic teller machines, product vending machines commonly used on the streets, and computer and display boxes that are made from sheet metal processing. At the same time, in order to consider the practicality of the product, the plates used in general sheet metal processing mainly include the following categories: 1. Plain Cold Rolled Steel Sheet (SPCC) Ordinary cold rolled steel plate is a thick steel plate, tube, or sheet material that is continuously cold rolled into a specified wall thickness by a cold rolling mill. The surface layer does not have safety protection and is very prone to oxidation and corrosion. Therefore, safety protection measures such as spraying and electroplating processes should be taken before application. 2. Galvanized steel plate

03

2023

Common surface treatment processes for precision sheet metal parts

Due to the fact that some sheet metal materials themselves do not have the ability to prevent rust and corrosion, they need to undergo surface treatment to achieve their objectives. Common surface treatment processes for steel plates Electrogalvanizing: The process of forming a uniform, dense, and well bonded metal or alloy deposition layer on the surface of a workpiece by electrolysis. Compared with other metals, zinc is a relatively inexpensive and easy to plated metal, belonging to a low value anti-corrosion electrodeposit. It is widely used to protect steel parts, especially against atmospheric corrosion, and for decoration. Plating technology includes bath plating (or hanging plating), barrel plating (suitable for small parts), automatic plating, and continuous plating (suitable for wire and strip). According to the classification of electroplating solutions in China, they can be divided into four categories: Cyanide zinc plating Due to the highly toxic nature of (CN), environmental protection has imposed strict restrictions on the use of cyanide in zinc electroplating, continuously promoting the development of cyanide reduction and replacement electroplating solution systems, requiring the use of low cyanide (micro cyanide) electroplating solutions. After adopting this process for electroplating, the product quality is good, especially for color plating, and the color remains good after passivation. Zincate zinc plating This process is evolved from cyanide zinc plating. Currently, there are two major factions in China, namely: a) the "DPE" series of Wuhan Material Protection Institute; b) "DE" series of radio and television stations. Zincate zinc plating, which belongs to alkaline additives; The PH value is 12.5~13. Using this process, the lattice structure of the plating layer is columnar, with good corrosion resistance, and is suitable for color galvanizing. Chloride zinc plating

03

2023

Types and production process of hardware elastic pieces

The production of metal shrapnel is a special process for cold stamping materials (metal or non-metal) into parts (or semi-finished products) through stamping molds. Its types are complex and diverse, and can be divided into spiral metal shrapnel, scroll metal shrapnel, plate metal shrapnel, etc. according to shape. It can also be divided into plastic metal shrapnel, stainless steel metal shrapnel, copper metal shrapnel, iron metal shrapnel, aluminum stainless steel shrapnel, etc. according to material. Most of them are made of metal spring steel, which plays a high-quality switching role between products by virtue of the conductivity of the metal spring. In the classification of hardware shrapnel, battery shrapnel and mobile phone hardware shrapnel are widely used: 1. Battery shrapnel: Battery shrapnel is one of the metal shrapnel, mainly made of stainless steel shrapnel, copper shrapnel, and iron shrapnel. Due to its good conductivity and elasticity, copper is generally used. 2. Mobile phone hardware shrapnel: It is also a type of hardware shrapnel, mainly used in mobile phones, and generally made of copper.

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