Welding alloy tool steel
Are you interested in welding of alloy tool steels from the vendor — company Electrocentury-steel? Here you will find only reliable information on this issue
Buy alloy tool steels in a large range of brands and profiles, the company offers Electrocentury-steel. Apply cost-effective prices from the manufacturer. Supplier ensures timely product delivery to any destination specified by the user.
Features of welding of alloy tool steels
With the exception of some die steels hot deformation, which contains in its composition not more than 0.55% carbon, the rest were characterized by poor weldability. So before cooking steel should be subjected to compulsory annealing and immediately prior to welding to preheat products. The temperature of such heating is determined by the complexity of the part. For tools and dies of a comparative simple configuration, it is set in the range of 350…4000 C, for a tool of complex shape, the preheating is carried out at 550…6500 C. After welding of steel tools, cold deformation, working under shock or alternating loads, immediately subjected to high vacation.
If the welding seam is imposed not directly on the working edge (e.g. knives), the pre-annealing is not required.
Gas or manual welding of alloy tool steels is not possible due to the low strength of the metal in the zone of the weld. The most widely transitions and technology of resistance welding.
The company Electrocentury-steel offers to buy at affordable prices from the manufacturer rolled alloy tool steels in a wide range of brands and profiles. The supplier ensures prompt delivery of products to any place specified by the customer.
Modes of welding of alloy tool steels
Preparatory operations prior to welding are:
- Training allowances under reflow. Sediment and subsequent machining of the weld zone. Allowances on draught and facing expect when you contact fusion welding, and trimming ends — for resistance welding;
- Machining the end surfaces of the tool. Thus minimize possible aperpendicular ends, their roundness, the curvature of the axis, etc.;
- Cleaning the surface of the tool made of alloy tool steels, dirt, traces of scale, oxide films and residues of the technological lubricant.
Directly welding is carried out by rubbing or melting.
When friction welding the connecting parts is due to the heat that is released when the clamp join workpieces with adjustable force. Blanks rotate at different angular velocities. Welding is performed on special machines for friction welding. The main process parameters are the pressure of the upsetting, the heating pressure, heating time, the time of precipitation. When the friction welding is achieved minimal energy consumption and surface quality of the weld joint evenly across the surface. The process is environmentally friendly because when welding do not form harmful emissions welding gases, no ultraviolet radiation, and the operation is easy and mechanisims automatizarea.
If necessary, the welding surfaces, the contact area of which exceeds 1300 mm2 (diameter of the blanks — over 40 mm) using a contact welding. In this case the relatively thin volume of metal heated by heat that is emitted by the current in its passage through the zone of connection.
For resistance welding definition, be the density of the welding current, during heating and melting, the working voltage on clamping jaws of a resistance welding machine, time and pressure precipitation. The process of resistance welding of alloy tool steels is carried out in three stages. First there is pre-heating, then melting, and then — the sediment, which results in the connection of products.
After welding annealing of workpieces, which aims to remove internal stresses arising during the welding process.
Buy in stock alloy tool steels at the producer prices offered by the company Electrocentury-steel. The supplier guarantees the client prompt delivery of products.