Metal Forming Method Daquan 2


Metal Injection Molding (MIM) is a new type of powder metallurgy near net shape forming technology from the plastic injection molding industry. It is well known that plastic injection molding technology produces various complex shapes of products at low prices, but plastics. The strength of the product is not high, in order to improve its performance, metal or ceramic powder can be added to the plastic to obtain a product with high strength and good wear resistance. In recent years, this idea has evolved to maximize the content of solid particles and completely remove the binder and densify the preform during subsequent sintering. This new powder metallurgy forming process is called metal injection molding.

Turning machining refers to lathe machining as part of machining. The turning machine mainly uses a turning tool to turn the rotating workpiece. Lathes are mainly used for machining shafts, discs, sleeves and other workpieces with a rotating surface. They are the most widely used type of machine tool in machinery manufacturing and repairing plants. Turning is a method of cutting a workpiece on a lathe using a workpiece relative to the tool rotation. The cutting energy for turning machining is mainly provided by the workpiece rather than the tool. Turning is the most basic and common cutting method, and it plays an important role in production. Turning is suitable for machining rotary surfaces. Most workpieces with rotary surfaces can be machined by turning, such as inner and outer cylindrical surfaces, inner and outer conical surfaces, end faces, grooves, threads and rotary forming surfaces. The tools used are mainly turning tools.

Milling Milling is the process of fixing the blank and cutting it on the blank with a high-speed rotating cutter to cut out the desired shape and features. Conventional milling is used more for simple shapes/features such as milling contours and grooves. CNC milling machines allow for the machining of complex shapes and features. The milling and boring machining center can perform three-axis or multi-axis milling and machining for machining, molds, inspection tools, tire tools, thin-walled complex curved surfaces, artificial prostheses, and blades. When selecting the content of CNC milling, the advantages and key functions of CNC milling machine should be fully utilized.

Planing is a cutting method that uses a planer to horizontally reciprocate the workpiece horizontally. It is mainly used for the shape processing of parts. The precision of planing is IT9~IT7, and the surface roughness Ra is 6.3~1.6um.

Grinding Grinding refers to the use of abrasives and abrasive tools to remove excess material from the workpiece. Grinding is one of the most widely used cutting methods.

Selective Laser Melting In a tank filled with metal powder, the computer controls a beam of high-powered carbon dioxide laser to selectively sweep across the surface of the metal powder. Wherever the laser goes, the metal powder on the surface layer is completely melted and bonded together, while the place where it is not illuminated remains in a powder state. The entire process needs to be carried out in a sealed chamber filled with inert gas.

Selective laser sintering is the use of infrared lasers as the energy source for the SLS method. The molding materials used are mostly powder materials. During processing, the powder is first preheated to a temperature slightly below its melting point, and then the powder is laid flat under the action of a flattening stick; the laser beam is selectively Z-sintered according to the layered cross-section information under computer control, one layer After the completion of the next layer of sintering, after the completion of the sintering to remove excess powder, a sintered part can be obtained. At present, the mature process materials are wax powder and plastic powder, and the process of sintering with metal powder or ceramic powder is still under study.

The metal deposit is somewhat similar to the "squeezed cream" type of fused deposition, but the metal powder is ejected. The nozzle also provides high-power laser and inert gas protection while ejecting the metal powder material. This is not limited by the size of the metal powder box, it can directly produce larger parts, and it is also suitable for repairing partially damaged precision parts.

Roll Forming The roll forming method uses a continuous set of frames to roll the stainless steel into a complex shape. The order of the rolls is designed such that the roll pattern of each frame continuously deforms the metal until the desired final shape is obtained. If the shape of the part is complicated, up to thirty-six racks can be used, but the simple shape of the parts, three or four racks can be used.

Die forging refers to a forging method in which a blank is molded by a mold on a special die forging device to obtain a forged piece. The forgings produced by this method are accurate in size, small in machining allowance, and relatively complicated in structure and high in productivity.

Die cutting is the blanking process. The film formed by the pre-process is positioned on the punching die, and the mold is removed to remove excess material, and the 3D shape of the product is retained to match the cavity of the mold.

Die-cutting process - die-cutting Die-cutting process, positioning the film panel or line on the bottom plate, fixing the die to the template on the machine, and using the force provided by the machine to control the blade to cut the material. What distinguishes him from the die cutting die is that the incision is smoother; at the same time, the effect of the indentation and the half break can be punched out by adjusting the cutting pressure and the depth. At the same time, the low cost of the mold is more convenient, safe and fast.