HLC METAL PARTS LTD company News and Trends items

By chemical or electrochemical methods, the state of metal surface changes, the dissolution rate drops sharply, and the corrosion resistance is improved. This process is called passivation. Passivation is often accompanied by a sudden increase in anode potential, which makes the anodic reaction difficult to carry out and makes the metal corrosion slow down or stop. Becau...

The process is called anodizing because the part to be treated forms the anode electrode of an electrolytic cell. Anodizing increases resistance to corrosion and wear, and provides better adhesion for paint primers and glues than bare metal does. Anodic films can also be used for several cosmetic effects, either with thick porous coatings that can absorb dyes or with th...

1. Annealing and normalizing of steel A.annealing The characteristic of the process of withdrawal is to heat and keep the work piece and then cool it down with the furnace. The purpose of annealing is to improve the plasticity of steel and facilitate Forming processing; reduce the hardness of steel to facilitate cutting processing; refine the grain, uniform structure, i...

The silver contact refers to the point of intersection where the electronic appliances are disconnected and contacted when they are opened and closed. Since the metal conductor terminal is prone to instantaneous heat and sparks at the moment of contact, the contact point is prone to oxidation and electrolysis in the multi-frequency process of use, so the contact point i...

1. Pure copper: commonly known as ‘red copper’ in China and ‘red copper’ in Japan and Taiwan a.Common grades: T1, T2, T3, TU1, TU2  b. Features: For conductivity c. Common uses: electrical switches, motor coils, electronic parts, air-conditioning pipelines, soft welding gun heads 2. Brass: containing zinc a. Common grades: H59, H62, H65, H68, HPb59-1 (free-cutting br...

Steel is the most widely used metal material. They are all iron-carbon alloys. The difference lies in the amount of carbon. In theory, Carbon content below 2.6% is steel, above iron. In fact, the carbon content of steel is generally below 1.4%, and the carbon content of iron is between 2.5~4.0%. Classification and application of steel There are many types of steel, but...

High-speed stamping process is suitable for precise parts with a small size. The fast and sturdy machines guarantee a high production rate and low costs per part and are available in the range from 630 to 2,000 kN. Compared with traditional stamping machine, the stroke speed is much faster than common machine. These special requirements generally relate to stock contr...

Laser cutting is a process that uses a high-power laser to cut through or mark the surface of materials. The high energy in the focus point of the laser beam causes the material to melt and evaporate. If the work piece or laser beam is now moved, a cut is created. The smallest possible cut width is dependent on both the beam characteristics and the material and materia...

The main of automotive molds is the cover mold. This type of this mold is mainly a cold stamping. The "automotive mold" in a broad sense is a general term for the molds that make all the parts on a car. For example, stamping dies, injection dies, forging dies, casting wax dies, glass dies, and so on. Stamping of automotive bodies are broadly divided into cover stamping,...

Copper is widely used in electrical equipment and household appliances. The usage of copper and its alloys continues to grow exponentially, with the total annual consumption across all industries currently exceeding 18 million tons per annum. Copper alloys usually come in the form of brass, phosphor bronze, aluminum bronze, silicon bronze, cupronickel, and nickel silve...

The electroless nickel plating process (EN) has several distinct advantages over the traditional electrolytic nickel plating process. The primary difference with the nickel plating process is that EN does not require the application of an external electrical current to drive the deposition as does electrolytic nickel. Rather, EN uses a chemical reducing agent within the...

Stamping (also known as pressing) is the process of placing flat sheet metal in either blank or coil form into a stamping press where a tool and die surface forms the metal into a net shape. Stamping includes a variety of sheet-metal forming manufacturing processes, such as punching using a machine press or stamping press, blanking, embossing, bending, flanging, and coin...

The following figure shows the diagrams of single thread and double thread. Because of its small helix angle (not easy to slide), single-thread thread has a large friction force formed by the screw and nut (with self-locking ability). It is used for thread locking, such as screws and nuts for fixing ceiling fans, and gas bottles. Fixed connection between joints and part...