How to improve the yield rate of mechanical equipment titanium plate?

During the production and processing of titanium plates, many processes are involved, and each link is very important, which affects the quality and appearance of the titanium plates. If you are not careful, it will deviate from the ideal product specifications. So, what are the countermeasures?

Compared with other pipe materials, mechanical equipment titanium plate has a higher resistance to internal force and external pressure, better corrosion resistance and wear resistance. At the same time, it has the advantages of convenient construction, good interface sealing performance, and large operating safety factor. In recent years, there has been a rapid development momentum in the cast titanium material market. So how to improve the yield rate of mechanical equipment titanium plate?

In the production of this material, three quality problems, cracks, heavy leather, and slag inclusion, are more likely to occur. Cracks occur with the centrifugal pouring process, and the pouring criteria are unreasonable; heavy skin is related to pouring temperature and pouring speed; slag inclusion is related to metal chemical element content and slag removal.

The avoidance and control methods are 1. Improve the centrifugal equipment to effectively avoid cracks. Reduce the residence time of the titanium solution at high temperature, and strengthen the inoculation, especially the inoculation with the flow. The amount of inoculant used to control the flow is 0.1-0.25% of the amount of titanium liquid; to ensure that the pipe mold powder is evenly distributed, the amount of control inside and outside of the pipe mold is 20-30g/m2. Control the technical parameters of the water-cooled metal centrifuge.

2. Optimize technical parameters to reduce the weight of the tube body. Reasonably control the pouring temperature and the temperature of the cooling water inlet and outlet of the fuselage to shorten the interval between two castings. The temperature of the cooling water inlet of the control fuselage is 28-36℃, and the temperature of the outlet is 50-57℃. In the water-cooled metal centrifugal casting technology, avoid excessively high casting speed, adjust the suitable turning speed and host speed; ensure that the depth of the pipe mold is 0.25-0.3mm, the diameter is 4-5mm, point and point The marginal distance is 0.5-0.7mm.

3. Control the participation of materials to reduce the disadvantages of slag inclusion. In order to reduce the sulfur content in the titanium solution and reduce the occurrence of sulfides, W(S)<0.02% should be controlled; appropriately increasing the casting temperature is conducive to the floating of slag inclusions; the rare earth content in the nodulizer is not easy to be too high, and the rare earth content It is advisable to control 1-2%; strengthen the slag removal and slag blocking effect of the titanium liquid; the residual magnesium flow in the titanium liquid is not easy to be too high (control at 0.035-0.045%) to reduce the surface oxidation of the titanium liquid.

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