Factors affecting the drawing of wire-cutting molybdenum wire

Wire cutting molybdenum wire is one of the main deep processing products of molybdenum metal, which is widely used in the field of metal cutting. However, in terms of quality, now the domestic market of wire cutting molybdenum wire products of varying quality, can guarantee stable product quality and molybdenum wire performance is not many manufacturers, which brings confusion to the wire cutting molybdenum wire market.

Due to the long process, there are a lot of intermediate factors affecting the quality of wire-cutting molybdenum wire. In the drawing process or wire cutting molybdenum wire finished product quality problems, if not from certain key influencing factors, it is often difficult to accurately find out where the problem lies. Therefore, it is necessary to target from certain key points to strengthen process control, to avoid the pulling process is not smooth and product quality problems occur. According to the summary of the production practice, the important control of the key links are: the nature of the raw material, tandem spin forging process and intermediate annealing process.

In recent years, with the progress of technology and enterprise development, some large-scale enterprises have been gradually used as raw material rolling rod. In the drawing process is basically the same conditions, the raw material of different wire cutting molybdenum wire performance measurement. Tandem spin forging is the production of wire cutting molybdenum wire before the process, the need to control the process elements are mainly temperature and feed rate. Production practice has proved that the feed rate is reasonably controlled at 2.5-4.0m/min within the more appropriate, and the heating furnace temperature of the subsequent production has an important impact.

Factors affecting the drawing of wire-cut molybdenum wire

Hydrogen annealing is a very important part of the production process of wire cutting molybdenum wire, through the annealing can eliminate the hardening phenomenon of the material in the processing, reduce the internal stress, and increase the plasticity of the processing. Whether the annealing process is appropriate, directly determines whether the subsequent drawing process is smooth and wire cutting molybdenum wire performance advantages and disadvantages. Hydrogen burning annealing focus on the control of the process elements are the amount of charge, annealing temperature and holding time. For a certain annealing furnace, usually more charge is a long holding time, if the amount of charge is certain, the holding time should also be certain.

Selection of suitable raw materials is the basis for the production of high-quality wire cutting molybdenum wire, different types and different manufacturers of raw materials are more different. From the development trend, the advantages of rolling molybdenum rods as a raw material for WEDM wires are obvious: smoother drawing process, lower labor intensity, higher product consistency and production efficiency. Intermediate annealing of molybdenum wires is a key part of the production of high-performance wire-cutting molybdenum wires. Producers must combine their own annealing furnace and intermediate material specifications to accurately determine the annealing time and charging volume parameters, and finely determine the intermediate material annealing temperature parameters. Controlling the furnace temperature of tandem spin forging is a necessary condition for the production of high-performance WEDM wires. As a wire-cutting molybdenum wire enterprises, need to determine this process parameters according to their own reality.