Although titanium sponge material in the Second

Secondary smelting produce consumable content of impurities TA2 pure milled raw material ingot Table relationship , which is the average of 100 titanium ingots . As can be seen from the table, iron , titanium ingot and the nitrogen concentration of the titanium sponge plant has not changed , the purification effect of sky ; silicon, carbon and oxygen titanium sponge increased slightly , and no purification effect, but in the smelting process is increased impurity contamination volume ; Lee hydrogen chloride purification obvious effect , do not hold the product in a reduced number of chlorine and level . It also shows that the main role of vacuum distillation . Both the total amount of impurities from the point of view , slightly lower titanium sheet metal than the titanium ingot of titanium sponge plant impurities, by lowering the melting sponge drink chlorine , and slightly increases the oxygen and other impurities. In short , a slight increase in the purity of titanium , but it remains in a substantially horizontal magnitude .State Reserve policy affected by early December , some titanium sponge plant titanium sponge enterprises to improve the sales price,so despite favorable policies , but did not titanium alloy plates change the current market downturn titanium sponge plant trend.Some titanium sponge plant enterprises raise product prices , but signs of recovery as the market did not like before . Since downstream firms reflect flat, high offer titanium sponge plant enterprises become castles in the air , and soon dropped back to previous levels. And during the bidding , some companies did not follow the big companies with price increases.

Scene of titanium sponge

Improve pouring liquid metal mold in pressure but also by the electromagnetic force to the liquid metal to achieve, this approach is the magnetic casting. Its basic principle isto cast off the magnetic titanium pumps is installed in the liquid metal to pass, in order to establish the magnetic field; at the same time, DC are also introduced into thissegment has established the field of liquid metal flow, in alternating magnetic and electric fields, the formation of the electromagnetic force direction and the liquid metalflow the same, in order to improve the liquid metal mold filling pressure. This method can be used to make the metal in the mould cavity flow than static casting by directvelocity metal indenters the runner to increase 2~2.5 times. 1 liquid metal is poured into the runner must maintain the continuity of liquid metal flow, intermediate cannotappear to flow.

So we must pay great attention to the sprue size design and electromagnetic Titanium alloy valves and current value choice. The 2 magnetic pump should be placed in the water outside the level, thereby reducing the consumption of metal casting system.

The 2 magnetic pump should be placed in the water outside the level, thereby reducing the consumption of metal casting system.

3 liquid metal mold filling should be carried out in magnetic pump pressure 0.01~0.05MPa, so as to ensure the liquid metal to flow speed requirements in the cavity, avoiding intermediate drying. In the mold is filled, we should raise the magnetic pump pressure to 0.12~0.3MPa, to improve the feeding ability of castings, castings appear to prevent hole.

Titanium alloy

Titanium alloy is with titanium alloy added other elements. There are two kinds of different titanium crystal: 882 DEG C for close packed six party structure titanium pumps , 882 DEG C beta titanium as the body centered cubic. Alloy elements according to their influence on the phase transition temperature can be divided into three categories:

A stable alpha phase, increase the phase transition temperature of the element as the alpha stable elements, aluminum, carbon, oxygen and nitrogen. The aluminum is the main alloy titanium alloy elements, it is to reduce the quality of the alloy at room temperature and high temperature strength, elastic modulus, increase proportion has obvious effect.

The stability of beta phase, reduce the transition temperature element for beta stable elements, can divide again isomorphous and eutectoid type two. The application of titanium alloy pump alloy products, the former are molybdenum, niobium, vanadium; the latter with chromium, manganese, copper, iron, silicon, etc..

The phase transition temperature has little effect on the element as the neutral element, a zirconium, tin etc.. Oxygen, nitrogen, carbon and hydrogen are the main impurities in titanium alloy. Oxygen and nitrogen has greater solubility in the alpha phase, there are significant strengthening effect of titanium alloy, but the plasticity decreased. Usually the provisions of oxygen and nitrogen in titanium content in 0.15 ~ 0.2% and 0.04 ~ 0.05% below. The solubility of hydrogen in the alpha phase is very small, too much dissolved in titanium alloy hydride hydrogen will be produced, the alloy brittle. Usually in titanium alloy hydrogen content of 0.015% control in the following. Dissolved hydrogen in titanium is reversible and can be used to remove the vacuum annealing.

Stress-strain state of deformation of the metal drawn titanium sponge powder

 One of the most common methods for drawing wire Rare camphor wood processing. Tensile deformation of

three essential elements are: titanium bicycle frames pulling force, drawing touch, pulled the metal. In the drawing process is

essentially the town pulling metal shaped plastic sex condition, after pulling force of traction, so the

metal is pulled through drawing dies, its cross-sectional area into small process.

    Metal occurs when the titanium alloy casting drawn-shaped plastic intercourse, Phi Larkin crumbs withstand pulling force

[force), the role of the die wall friction reaction force and mold, the metal is always second to stress

tensile stress state; their Titanium Casting Golf Heads strain two compression has been extended state.