Products Description
1.Features
GR1: Compared to other metal rods, GR1 titanium rods are the softest and most ductile metal we offer. That said, GR1 has a high level of formability and corrosion resistance, as well as impact toughness.
GR2: GR2 titanium rods are known as a commercially pure 'workhorse', providing useful strength for a wide range of applications. When comparing GR2 titanium to GR1 titanium, GR2 titanium is slightly stronger and has excellent weldability, strength and ductility, ultimately making it the industry's regular choice.
2.Applications
GR1:Our titanium rods are used in a wide range of applications including chemical processing, construction and automotive parts, whilst GR1 titanium rods are also used by the medical industry for surgical implants and devices.
GR2 titanium rods can be used in similar applications to GR1 titanium rods, but are also used in power generation, hydrocarbon processing and desalination.
3.Rolling process
(1) Pressing electrode, the titanium sponge will be pressed electrode through the press to form a dense titanium sponge pressed block electrode;
(2) Vacuum fusion casting, three times vacuum fusion casting of the above titanium sponge pressed block electrode is carried out under the conditions of 1700-1800°C and -103Pa;
(3) Blank opening, under the condition of 1000℃, the blank is opened by hydraulic press, and finally pressed into a square blank;
When opening the blanks should be noted that due to high pressure and reduce the life of the titanium rods, so when the closed die forging method of die forging titanium rods, closed die forging must be strictly limited to the volume of the original blanks, which complicates the preparation process. Whether to use closed die forging, from the interest and process feasibility of both considerations. Open die forging, burr loss accounted for 15-20% of the weight of the blank clamping part of the process of waste (if necessary according to the conditions of die forging to leave this part) accounted for 10% of the weight of the blank burr metal relative loss is usually with the reduction of the weight of the blank and increase, some structural asymmetry, cross-sectional area of the larger difference and the existence of difficult to fill the local forging, burr consumption can be as high as 50% of the closed die forging, although there is no burr loss, but the blank making process is complex Closed die forging although there is no burr loss, but the billet making process is complex, the need to add more transitions with grooves, will undoubtedly increase the auxiliary costs.
Subsequently only the final blanks for heat treatment and cutting process. Introduction of forging temperature and the degree of deformation is to determine the basic factors of alloy organisation and properties. Heat treatment of titanium rods is different from that of steel, and die forging is usually used to make shape and size close to scrap. It does not play a decisive role in the organisation of the alloy. Therefore, the process specification of the final step of the titanium bar has a particularly important role. Must make the overall deformation of the blank is not less than 30% of the deformation temperature does not exceed the phase transition temperature, in order to make the titanium bar at the same time to obtain high strength and plasticity and should strive for the temperature and the degree of deformation throughout the deformation of the blank as far as possible uniform distribution.
(4) the first rolling, under the conditions of 970 ~ 980 ℃, with the mill initially rolled into a cylindrical shape blank;
(5) the second rolling, under the conditions of 950 ℃, with the mill rolled into blanks.
4. Surface polishing
The use of different specifications of soft cloth wheel or black brush, dipped in titanium and titanium-containing alloys special polishing paste on the surface of titanium and titanium alloy polishing method. In the titanium castings for polishing, must be completely clear casting surface pollution layer and did not occur new grinding hardened layer, otherwise it will not be able to achieve the desired polishing effect. Polishing is still using high speed, light pressure. Some people have experimented with the use of green polishing paste on titanium and titanium alloy castings for polishing, achieved a more satisfactory polishing effect. After the polishing of titanium and titanium alloy castings can not be immediately into the water washing, must be the surface of the oxide film is fully formed before washing, otherwise the surface will produce a dark phenomenon . 
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