Welding of alloyed tool steel
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Annealing and preheating
Contact electrowelding is used. With the exception of hot-deformed die-cast steels, which contain less than 0.55% of carbon, the rest are poorly welded. Therefore, before welding, annealing and heating of the products is necessary. The temperature of such heating is determined by the complexity of the part, usually in the range of 350… 400 ° С, for details of complex shape — 550… 650 ° С. After welding, the part is immediately subjected to high tempering. If the welding seam is not applied directly to the working edge (for example, for knives), then preliminary annealing is not necessary. Supplier Avlob offers to buy alloyed tool steel at a bargain price. The price is the best in this segment of rental.
Preparatory operations
Preparatory operations before welding are:
- Preparation of allowances for melting. Precipitation and subsequent machining of the weld zone. Allowances for draft and trimming of ends are calculated
- Mechanical machining of the end faces of the tool minimizes possible misfits of the ends or their curvature;
- Cleaning of the surface of the tool, made of tool alloy steel, from dirt, traces of scale, oxide films and residual grease.
Friction Welding
When welding with friction, the joining of parts occurs due to the heat that is released. The blanks thus rotate at different angular velocities. Welding is performed on special machines for friction welding. The main parameters of the process are sedimentation pressure, heating pressure, heating time, and settling time. Friction welding requires minimal energy consumption, and the surface quality of the welded joint is uniform throughout the surface. When welding, there are no harmful emissions of welding gases, there is no ultraviolet radiation, and the operation itself is easy and automated.
Contact welding
When welding surfaces of more than 1300 mm 2, contact electric welding is used. For contact welding, the welding current density, the working voltage on the clamping jaws of the electric welding machine, the time and pressure of the draft are subject to control. The process of contact welding of instrumental alloy steels is carried out in three stages. First, preheating is carried out, then — melting, and then — sediment, as a result of which the products are connected. After welding, the workpieces are annealed, the purpose of which is to remove the internal stresses that arise during the welding process.
Delivery, price
Are you interested in welding alloyed tool steel? Buy alloyed tool steel at an affordable price from the supplier Avlob today. The price is formed on the basis of European production standards. The supplier Avlob offers to buy alloyed tool steel at the optimal price in bulk or at retail.