M6*20mm Button Head Titanium Screw Bicycles Motorcycles use

Product Description

Titanium screw button head for bicycles, motorcycles, etc.

Heat Treatment

Titanium alloys are alloys based on titanium with the addition of other elements. Titanium has two homogeneous heterogeneous crystals: α-titanium with a compact hexagonal structure below 882°C and β-titanium with a body-centered cubic structure above 882°C. According to the effect on the phase transition temperature, the alloying elements can be divided into three categories: 1. The elements that stabilize the α phase and increase the phase transition temperature are α stable elements, including aluminum, carbon, oxygen and nitrogen. Among them, aluminum is the main alloying element of titanium alloy. It has an obvious effect on improving the strength at room temperature and high temperature, reducing the specific gravity and increasing the elastic modulus of the alloy. (2) β-stable phase and phase transition temperature drop are β-stable elements, which can be divided into two types: isomorphism and eutectoid. The former includes molybdenum, niobium and vanadium, while the latter includes chromium, manganese, copper, iron and silicon. (3) Neutral elements such as zirconium and tin have little effect on the phase transition temperature.

Oxygen, nitrogen, carbon and hydrogen are the main impurities in titanium alloys. Oxygen and nitrogen have high solubility in α phase, which has obvious strengthening effect on titanium alloy, but will reduce its plasticity. Oxygen and nitrogen content in titanium are usually specified below 0.15-0.2% and 0.04-0.05%, respectively. The solubility of hydrogen in the alpha phase is very small. Excess hydrogen dissolved in titanium alloys can form hydrides, which can make the alloy brittle. Generally, the hydrogen content in titanium alloys is controlled below 0.015%. The dissolution of hydrogen in titanium is reversible.

Different phase compositions and structures can be obtained by adjusting the heat treatment process. It is generally believed that the fine equiaxed structure has better plasticity, thermal stability and fatigue strength; the acicular structure has higher endurance strength, creep strength and fracture toughness; the equiaxed acicular hybrid structure has better comprehensive properties.

Description

Competitive Advantages

We have more than ten years of experience in building titanium’s factory,which includes almost one thousand employees.our factory located in baoji,titanium valley.we strictly control every process of production and strive to provide customers with high quality products,And our products sale to all over the world.