What should be noted during the welding process of the sheet metal frame?

Sheet metal frame is a professional machine equipment mainly used for stamping, bending, forming, splicing and other processing work in sheet metal manufacturing. So, the editor of the sheet metal processing factory will talk about the following points to pay attention to during the welding process of the sheet metal frame: 1. Preparation work: Before starting welding, it is necessary to ensure that the sheet metal material meets the technical requirements and is free of defects such as cracks, pores, and slag inclusions. At the same time, clean the sheet metal materials to remove foreign objects such as oil stains, dust, and oxide layers to ensure welding quality. 2. Welding equipment and environment: Ensure that welding equipment and tools are in good condition and inspect their safety. During the welding process, maintain a clean and well ventilated environment to avoid fire and explosion hazards. 3. Welding operation: During welding, the dimensions and requirements on the drawing should be strictly followed to ensure symmetry, balance, and verticality of the welding. The welding surface should be clean and avoid the impact of oil and dirt on the welding quality. At the same time, choose appropriate welding methods, welding materials, and welding parameters, strictly control the welding heat input, and avoid deformation and welding cracks. 4. Welding quality inspection: After welding is completed, it is necessary to carefully inspect and test the weld seam, including its size, appearance quality, strength, etc., to ensure that the welding quality meets the requirements. If any unevenness or other problems are found in the weld seam, it should be repaired in a timely manner. 5. Safety protection: When carrying out welding operations, it is necessary to wear personal protective equipment such as masks, leather gloves, insulated shoes, etc. to prevent injuries caused by flying sparks and molten metal. Meanwhile, when welding in narrow areas, it is important to ensure that two operators rotate and monitor their safety at all times.

03 April-2024

Several Methods of Sheet Metal Numerical Punching

Numerical punching is a very important step in sheet metal processing. Compared to traditional punching machines, numerical punching has greatly improved processing efficiency; It also plays a significant role in improving the problems in mass production of sheet metal parts and complex sheet metal processing. In sheet metal processing, there are several main processing methods for numerical punching: 1. Single punching, which means completing multiple punching processes including arc distribution, grid holes, etc. in a single operation; 2. Continuous punching is divided into two directions: in the same direction and in multiple directions. Continuous punching in the same direction is mostly processed by overlapping molds, which is most suitable for processing elongated holes; Multi directional continuous punching is most suitable for using small molds for large hole machining; 3. Silkworm processing, using small circular molds and small step sizes for continuous arc punching processing; 4. Single or continuous forming processing, single forming is a sheet metal processing that involves shallow stretching and one-time forming based on the nature of the mold. If the forming is larger than the mold size, continuous forming processing is required; 5. Array forming is suitable for processing multiple workpieces on large plates, and the types of workpieces can be the same or different

24 January-2024

Detailed explanation of the main processes of sheet metal processing

Sheet metal processing includes traditional methods and process parameters such as cutting, punching, bending and forming, as well as various cold stamping mold structures and process parameters, various equipment working principles and control methods, as well as new stamping technologies and processes. Common sheet metal processing techniques include: (1) Riveting: refers to the process of firmly pressing fasteners such as rivet nuts, rivet screws, or rivet nut columns onto the workpiece using a punch or hydraulic press. (2) Riveting: refers to the process of first sinking the workpiece into a hole, and then using a punch or hydraulic press to firmly press the rivet nut onto the workpiece. (3) Pulling mother: refers to using a process similar to riveting. The process of firmly connecting riveted nuts (POP) and other connecting parts to the workpiece using a puller gun. (4) Riveting: refers to the process of using a riveting gun as a tool to tightly connect two or more workpieces together with rivets. (5) Riveting: The process of using rivets to connect two or more workpieces face to face together. If countersunk riveting is used, the workpiece needs to be countersunk first. (6) Corner cutting: refers to the process of using a mold on a punch or hydraulic press to cut off the corners of a workpiece. (7) Bending: refers to the process in which a workpiece is formed by a bending machine. (8) Forming: refers to the process of using a mold on a regular punch or other equipment to deform a workpiece. (9) Cutting: refers to the process of obtaining rectangular workpieces from materials through a shearing machine. (10) Cutting: refers to the process of cutting a workpiece through LASER or CNC punching. (11) Blanking: refers to the process of using molds to process the shape of a product on a regular punch or other equipment. (12) Punching: refers to the process of machining holes on workpieces using ordinary punching machines and molds. (13) Punching convex hull: refers to the process of forming a convex shape on a workpiece using a mold in a punch or hydraulic press. (14) Punching and tearing: also known as "punching bridge", refers to the process of using a mold on a punch or hydraulic press to form a workpiece in the shape of a bridge. (15) Punching: also known as "flipping", refers to the process of using a mold on a regular punch or other equipment to form a circular hole edge on the workpiece and flip it up. Process. (16) Tapping: refers to the process of machining internal threads on a workpiece. (17) Leveling: refers to the process of using other equipment to level a workpiece that is uneven before and after processing. (18) Tooth restoration: refers to the process of repairing the second spiral tooth on a workpiece that has been pre tapped with teeth. (19) Drilling: refers to the process of using a drill bit to drill holes in a workpiece on a drilling or milling machine. (20) Chamfer: refers to the process of machining sharp corners of workpieces using molds, files, polishing machines, etc. (21) Printing: refers to the process of using a mold to print text, symbols, or other marks on a workpiece. (22) Countersunk hole: refers to the process of machining tapered holes on a workpiece to match connectors such as countersunk screws. (23) Flattening: refers to the process of transitioning a workpiece with a certain shape to a flat surface. (24) Punching holes: Refers to the use of a mold to punch a mesh of holes into a workpiece on a regular punch or CNC punch. (25) Expanding hole: refers to the process of using a drill or milling cutter to process small holes on a workpiece into large holes.

24 January-2024

What are the commonly used materials for sheet metal processing?

Sheet metal processing mainly relies on metal materials, and commonly used materials for sheet metal processing include: 1. Galvanized steel plate SECC The substrate of SECC is a general cold-rolled steel coil, which becomes an electroplated product after undergoing degreasing, pickling, electroplating, and various post-treatment processes on a continuous electroplated production line. SECC not only has the mechanical properties and similar processability of general cold-rolled steel sheets, but also has superior corrosion resistance and decorative appearance. It has great competitiveness and substitutability in the market of electronic products, home appliances, and furniture. For example, SECC is commonly used in computer cases. 2. Ordinary cold-rolled sheet SPCC SPCC refers to the continuous rolling of steel ingots into steel plate coils or sheets with the required thickness by a cold rolling mill. The surface of SPCC lacks any protection and is highly susceptible to oxidation when exposed to air, especially in humid environments where the oxidation rate accelerates and dark red rust appears. When using, the surface needs to be painted, electroplated, or other protective measures. 3. Hot dip galvanized steel plate SGCC Hot dip galvanized steel coils refer to semi-finished products that have been hot-rolled, pickled or cold-rolled, cleaned, annealed, and immersed in a molten zinc bath at a temperature of about 460 ° C, to coat the steel sheet with a zinc layer, and then subjected to quenching, tempering, leveling, and chemical treatment. SGCC material is harder than SECC material, with poor ductility (avoiding deep drawing design), thicker zinc layer, and poor weldability. 4. Stainless steel SUS304 One of the most widely used stainless steels, it has higher corrosion and heat resistance than steel containing Cr (chromium) due to its Ni (nickel) content. It has excellent mechanical properties, no heat treatment hardening phenomenon, and no elasticity. 5. Stainless steel SUS301 The content of Cr (chromium) is lower than SUS304, and its corrosion resistance is poor. However, after cold processing, it can achieve good tensile strength and hardness in stamping processing, with good elasticity. It is mainly used for spring springs and EMI prevention.

24 January-2024