3results about How to "Increased dimensional tolerances" patented technology

The present application relates to core-pulling rivet titanium alloy wire processing technical field, specifically to a kind of preparation method of TB9 titanium alloy large disc round wire for core-pulling rivet.The method first obtains the TB9 titanium alloy ingot with a diameter of 500-700mm, then the TB9 titanium alloy ingot is forged into a bar blank with a diameter of 290-310mm at 1100-1200 ℃, then the TB9 titanium alloy bar blank is rough forged into a bar blank with a diameter of 130-150mm at 1000-1100 ℃, then the TB9 titanium alloy bar blank is precision forged into a bar blank with a diameter of 95-105mm at 850-950 ℃, then the TB9 titanium alloy bar blank is continuously rolled at 780-900 ℃, and then quenched after rolling, to obtain a large disc round wire blank with a diameter of 7.5-15mm, then room temperature drawing, then high-temperature solid solution, then room temperature drawing again, then peeling, polishing and coating treatment.At this time, the alloy cross-section structure is fine and uniform equiaxed structure, the longitudinal section structure is elongated fibrous structure, and after aging treatment, it meets the mechanical property requirements of AMS4957F for TB9 titanium alloy wire.

The present invention provides a high-strength, low-gassing inorganic binder and a preparation method and use thereof. The present invention combines the addition and content selection of alkali metal components, preservative components, curing agent components, mixed acid components, modifier components, and sustained-release agent components with a mixing and hardening process to manufacture a casting core that meets the liquid molding requirements of large, complex, thin-walled, integral precision aluminum alloy castings / molds. Compared with traditional water glass inorganic binders, the casting core of the present invention after mixing and hardening has stable chemical properties, high room temperature strength, and good disintegration properties. It is not easy to have a significant decrease in bonding performance due to moisture absorption when stored in the air; compared with organic resin binders such as phenolic resins and phenol urethane resins, the casting core of the present invention after mixing and hardening has high room temperature strength, no volatile gas is generated during the molding and casting process, and the manufacturing cost is low, which can achieve green casting of large, complex, thin-walled, integral precision aluminum alloy castings / molds.

The invention relates to the technical field of processing of titanium alloy wires for fasteners, in particular to a preparation method of a TC10 titanium alloy large-disc round wire for a fastener. The method comprises the following steps: firstly, obtaining a TC10 titanium alloy cast ingot with the diameter of 500-700mm, then cogging and forging the TC10 titanium alloy cast ingot at the temperature of 1100-1200 DEG C to form a bar billet with the diameter of 290-310mm, then roughly forging the TC10 titanium alloy bar billet at the temperature of 1000-1100 DEG C to form a bar billet with the diameter of 130-150mm, then precisely forging the TC10 titanium alloy bar billet at the temperature of 950-1050 DEG C to form a bar billet with the diameter of 95-105mm, then continuously rolling the TC10 titanium alloy bar billet at the temperature of 780-900 DEG C, rolling the bar billet into a large disc round wire with the diameter of 7.5-15mm, drawing, annealing, and finally obtaining the large disc round wire with the diameter of 7.5-15mm. And then peeling, polishing and coating treatment are carried out. At the moment, the cross section structure of the alloy is a fine and uniform equiaxial alpha + beta double-phase structure, has excellent strength and plasticity, and meets the requirements of TC10 titanium alloy materials for fasteners.