YATB640 Titanium Alloy Metal Injection Molding Parts

Performance Of Titanium Alloy

Titanium is a new type of metal. The performance of titanium is related to the impurity content of carbon, nitrogen, hydrogen, oxygen, etc. The impurity content of pure titanium iodide does not exceed 0.1%, but its strength is low and its plasticity is high. The properties of 99.5% industrial pure titanium are: density ρ = 4.5g/cm3, melting point 1725℃, thermal conductivity λ = 15.24W/(m.K), tensile strength σb = 539MPa, elongation δ = 25%, cross-sectional shrinkage ψ = 25%, elastic modulus E = 1.078×105MPa, hardness HB195.

(1) High strength The density of titanium alloy is generally around 4.5g/cm3, which is only 60% of that of steel. The strength of pure titanium is close to that of ordinary steel. Some high-strength titanium alloys exceed the strength of many alloy structural steels. Therefore, the specific strength (strength/density) of titanium alloy is much greater than that of other metal structural materials, as shown in Table 7-1. It can produce parts and components with high unit strength, good rigidity and light weight. At present, titanium alloy is used in aircraft engine components, skeletons, skins, fasteners and landing gear.

(2) High thermal strength The operating temperature is several hundred degrees higher than that of aluminum alloy. It can still maintain the required strength at medium temperature and can work for a long time at 450-500℃. These two types of titanium alloys still have high specific strength in the range of 150℃-500℃, while the specific strength of aluminum alloy decreases significantly at 150℃. The working temperature of titanium alloy can reach 500℃, while that of aluminum alloy is below 200℃.

(3) Good corrosion resistance Titanium alloy works in humid atmosphere and seawater medium, and its corrosion resistance is much better than that of stainless steel; it has strong resistance to pitting, acid corrosion and stress corrosion; it has excellent corrosion resistance to alkali, chloride, chlorine organic substances, nitric acid, sulfuric acid, etc. However, titanium has poor corrosion resistance to reducing oxygen and chromium salt media.

4) Good low temperature performance Titanium alloy can still maintain its mechanical properties at low and ultra-low temperatures. Titanium alloys with good low temperature performance and extremely low interstitial elements, such as TA7, can still maintain a certain plasticity at -253°C. Therefore, titanium alloy is also an important low-temperature structural material.

(5) High chemical activity Titanium has high chemical activity and reacts strongly with O, N, H, CO, CO2, water vapor, ammonia, etc. in the atmosphere. When the carbon content is greater than 0.2%, hard TiC will be formed in the titanium alloy; when the temperature is high, it will also form a TiN hard surface layer when it reacts with N; when it is above 600°C, titanium absorbs oxygen to form a hardened layer with very high hardness; when the hydrogen content rises, a brittle layer will also be formed. The depth of the hard and brittle surface layer produced by absorbing gas can reach 0.1-0.15 mm, and the degree of hardening is 20%-30%. Titanium also has a high chemical affinity and is prone to adhesion to the friction surface.

(6) Small thermal conductivity and elastic modulus. The thermal conductivity of titanium is λ=15.24W/(m.K). The thermal conductivity of titanium alloy products is about 1/4 of nickel, 1/5 of iron, and 1/14 of aluminum, while the thermal conductivity of various titanium alloys is about 50% lower than that of titanium. The elastic modulus of titanium alloy is about 1/2 of that of steel, so it has poor rigidity and is easy to deform. It is not suitable for making slender rods and thin-walled parts. The rebound of the machined surface during cutting is very large, about 2 to 3 times that of stainless steel, causing severe friction, adhesion, and bonding wear on the back face of the tool.

Qinhuangdao Zhongwei Precision Machinery Co., Ltd. is a high-tech enterprise specializing in metal powder injection molding (MIM) and R&D, production and service. It has a complete production system of design-mold opening-batch-sintering-machining-grinding and polishing-assembly. The company passed the ISO9001:2008 quality system certification in 2015 and obtained the Qinhuangdao High-tech Enterprise Certificate in 2017. Our company can produce various structural parts, functional parts and appearance parts with complex three-dimensional shapes according to the needs of different customers. Products are widely used in 3C industry, lock industry, watch and jewelry industry, medical equipment industry, home appliance industry, automobile industry, communication product industry, etc. We are based on a team of talents graduated from the Department of Powder Materials, and provide high-quality products to customers in various industries with rigorous and standardized control processes.

Our efficiency: quotation within 24 hours, 10-15 days mold cycle, 5 days proofing cycle, 7 days bulk product cycle.

Our technical team: The R&D team headed by Dr. Chen from Beijing University of Science and Technology has maintained a product development success rate of more than 98% for two consecutive years. The company develops more than 400 new products on average each year, which is more than 80% higher than its peers, and has obtained more than 20 patent certificates. We can produce titanium alloy, stainless steel, high-temperature alloy, and other MIM parts for you

Our services: Our company has a complete set of production lines including mold manufacturing, batching, sintering, CNC machining, grinding and polishing, and assembly; customer service actively reports production progress to customers every 3 days.

Our quality: 100% of our products have established a complete set of process data to ensure quality and stability of different batches, and the average yield rate is controlled at more than 98%.

We will repay our customers for their long-term support and trust with higher quality and better service. We sincerely invite new and old friends from all walks of life to visit us for guidance, to deepen our understanding and to cooperate sincerely!