TiAl metal injection molding MIM parts

TiAl metal injection molding MIM parts

Product Details:

Material: TiAl

Different surface treatments and hair color treatments are available:

Anodic color treatment

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shot blasting

Electrolytic polishing

According to customer requirements

Titanium-aluminum alloy is a silver-white metal with many excellent properties. The density of titanium is 4.54g/cm3, which is 43% lighter than steel and slightly heavier than the famous light metal magnesium. The mechanical strength is about the same as steel, twice as strong as aluminum, and five times stronger than magnesium. Titanium is resistant to high temperatures, with a melting point of 1942K, which is nearly 1000K higher than gold and nearly 500K higher than steel.

Foreign name Titanium aluminum alloy

Density 4.54g/cm3

Melting point 1942K

Titanium is a metal with relatively active chemical properties. It can interact with non-metals such as O2, N2, H2, S and halogen when heated. However, at normal temperature, an extremely thin and dense oxide protective film is easily formed on the titanium surface, which can resist the effects of strong acids and even aqua regia, showing strong corrosion resistance. Therefore, ordinary metals become riddled with holes in solutions of acids, alkalis, and salts, while titanium remains unharmed.

Liquid titanium can dissolve almost all metals and can therefore form alloys with a variety of metals. Titanium steel made by adding titanium to steel is tough and elastic. Titanium forms interstitial compounds or intermetallic compounds with metals such as Al, Sb, Be, Cr, Fe, etc.

Planes made of titanium alloys can carry more than 100 more passengers than planes made of other metals of the same weight. The submarine made of it can resist both seawater corrosion and deep pressure, and its diving depth is 80% greater than that of stainless steel submarines. At the same time, titanium is non-magnetic, will not be detected by mines, and has a good anti-surveillance effect.

Titanium is "biophilic". In the human body, it can resist the corrosion of secretions and is non-toxic, and is adaptable to any sterilization method. Therefore, it is widely used in the production of medical devices, artificial hip joints, knee joints, shoulder joints, hypochondrium joints, skulls, active heart valves, and bone fixation clips. When new muscle fiber rings wrap around these "titanium bones", these titanium bones begin to maintain the normal activities of the human body.

Titanium is widely distributed in the human body. The content in a normal human body is no more than 15mg per 70kg of body weight. Its role is still unclear. However, it has been confirmed that titanium can stimulate phagocytes and enhance immunity.

The powder injection molding process is a powder metallurgy forming technology. Its advantage is that it can accurately prepare semi-finished or finished alloy parts with different shapes. The process flow based on TiAl alloy powder injection molding is shown in Figure 3. First, a certain mass fraction of Ti powder, A1 powder and paraffin-based binder are fully mixed in a certain proportion, and then injection molded on an injection molding machine. Then, the paraffin-based binder is removed in a trichlorethylene solvent. Finally, the near-net shape TiAl alloy is obtained by sintering at high temperature. Zhongwei Precision and the Institute of Powder Metallurgy of the University of Science and Technology Beijing prepared TiAl alloy using powder injection molding technology. The mixed Ti powder, A1 powder and paraffin-based binder are injection molded on an injection molding machine. The molded blanks are weighed and degreased in trichlorethylene solvent, and then the residual binder is removed using a vacuum thermal degreasing method. Finally, the billet is sintered at high temperature in a high vacuum aluminum wire furnace to obtain a TiAl alloy with a full lamellar structure. Experimental results show that: at high temperatures, the initial dual-state structure of the sintered body disappears, and with the increase of lamellar clusters, it eventually transforms into a full-lamellar structure; when the sintered body is kept in the A+C phase zone for 1 hour, the relative density They are 73% respectively. When the A phase area is kept for 1 hour, the relative density can reach 85%. When kept at 1450°C for 30 minutes, the compressive strength of the alloy reaches 2105MPa, the compression rate is 30.9%, and the relative density reaches 95%. The advantage of the powder injection molding process is that it is suitable for preparing parts with complex shapes, has low machining costs, and is very conducive to the molding of small-size alloys. It can prepare alloys with better mechanical properties and effectively improve the quality of molded alloys.

Qinhuangdao Zhongwei Precision Mechanical Parts Co., Ltd. mainly produces various titanium alloy, copper-based, iron-based, stainless steel-based pressed powder metallurgy products and various injection molded powder metallurgy products. The company has more than 60 sets of main production equipment and more than 20 fully automatic powder metallurgy rolling mills ranging from 6 tons to 630 tons. Two sets of powder metallurgy injection molding production lines are equipped with advanced sintering and degreasing integrated vacuum furnaces. The company has a supporting heat treatment workshop to ensure the heat treatment quality of the factory's powder metallurgy parts. It has fully automatic vacuum furnaces, mesh belt furnaces, carburizing furnaces, high-frequency furnaces and other equipment to ensure that it can provide customers with various high-strength powder metallurgy structural parts.

The company's products are widely used in medical equipment, textile machinery, power tools, engine parts, automobile and motorcycle parts, household appliances, hardware tools, woodworking machinery, printing machinery and other industries. The products are exported to Japan, the United States, Germany, the United Kingdom and other countries.