Thermal treatment method for improving mechanical property of titanium alloy strip

The invention discloses a thermal treatment method for improving mechanical property of a titanium alloy strip, which comprises the following steps of: 1, a first stage of thermal treatment: performing the first stage of thermal treatment on the treated titanium alloy strip by adopting a vacuum thermal treatment furnace, wherein the heating temperature is 780 to 820 DEG C, the heat preservation time is 10 to 20 minutes and the cooling mode is vacuum gas quenching; and a second stage of thermal treatment: performing the second stage of thermal treatment on the treated titanium alloy strip after the first stage of thermal treatment by adopting the vacuum thermal treatment furnace, wherein the heating temperature is 460 to 540 DEG C, the heat preservation time is 6 to 10 hours and the cooling mode is vacuum furnace cooling. The method has the advantages of reasonable design, simple thermal treatment, simple and convenient operation and good thermal treatment effect; the mechanical property ...

Process for smelting cleaning titan and titan alloy casting ingot

The invention discloses a method for melting a clean titanium ingot and a titanium alloy ingot. The method comprises the following steps of: weighing sponge titanium or weighing a pure alloy addition element, an intermediate alloy and sponge titanium; pressing the sponge titanium or the mixed pure alloy addition element, the intermediate alloy and the sponge titanium into an electrode block; soldering the pressed electrode block into an electrode; and performing primary electron-beam cold-hearth melting to the electrode by an electron-beam cold-hearth furnace to produce a titanium ingot or a titanium alloy ingot which are clean and have homogeneous chemical compositions. The melting vacuity for the electron-beam cold-hearth melting is lower than 6x10<-2>Pa, the melting speed for the electron-beam cold-hearth melting is between 70 and 150kg/h, and the melting power for the electron-beam cold-hearth melting is between 100 and 300kW; and the weight of the pure alloy addition elements and the ...

Titanium plate applied to metal diaphragm of aerospace propellant storage box

The invention discloses a titanium plate applied to a metal diaphragm of an aerospace propellant storage box. Impurity content of a pure titanium material is defined in a manner that the content of oxygen element O is smaller than or equal to 0.06%, the content of iron element Fe is smaller than or equal to 0.05%, the content of carbon element C is smaller than or equal to 0.03%, the content of nitrogen element N is smaller than or equal to 0.01%, the content of hydrogen element H is smaller than or equal to 0.008% and the sum of the content of other impurity elements is smaller than or equal to 0.2%; the rolling temperature of the plate is 700 to 800 DEG C; the heating number deformation is controlled to be 50% to 60%; the annealing temperature of a finished plate product is 650 to 750 DEG C; the temperature maintaining time is 30-90 minutes; the average grain size of the microscopic structure of the finished product is controlled to be 50 micrometers to 100 micrometers. According to the ...

Thermal treatment method for improving mechanical property of titanium alloy strip

The invention discloses a thermal treatment method for improving mechanical property of a titanium alloy strip, which comprises the following steps of: 1, a first stage of thermal treatment: performing the first stage of thermal treatment on the treated titanium alloy strip by adopting a vacuum thermal treatment furnace, wherein the heating temperature is 780 to 820 DEG C, the heat preservation time is 10 to 20 minutes and the cooling mode is vacuum gas quenching; and a second stage of thermal treatment: performing the second stage of thermal treatment on the treated titanium alloy strip after the first stage of thermal treatment by adopting the vacuum thermal treatment furnace, wherein the heating temperature is 460 to 540 DEG C, the heat preservation time is 6 to 10 hours and the cooling mode is vacuum furnace cooling. The method has the advantages of reasonable design, simple thermal treatment, simple and convenient operation and good thermal treatment effect; the mechanical property ...

Rare metal high-heat anti-oxidation lubricating paint and preparation method thereof

The invention discloses a rare metal high temperature oxidation resistant lubricating paint and the process for preparation, wherein the process for preparation comprises the following steps: evenly mixing metal oxide particle Al2O3 whose average particle size is 1-30mm, TiO2, SiO2, CaO2, Na2O, K2O and B2O3, and then feeding metal oxide particle which is evenly mixed in an electric stove, cooling to indoor temperature after melting for 1-5 hours under high temperature which is 1000 DEG C-1500 DEG C and atmospheric pressure, and then disintegrating in indoor temperature, screening to be powder which is -180 DEG C, feeding powder and water-soluble epoxide resin in a mixer hopper to dilute, and evenly stirring, and then preparing high temperature oxidation resistant lubricating paint whose concentration is 20%-40%. The paint of the invention can improve surface quality of extruded sections and service span of tool and molds, can improve rate of finished product, and can lower production cost ...

Method for processing titanium-cuprum metallic composite material

Rare metal high-heat anti-oxidation lubricating paint and preparation method thereof

The invention discloses a rare metal high temperature oxidation resistant lubricating paint and the process for preparation, wherein the process for preparation comprises the following steps: evenly mixing metal oxide particle Al2O3 whose average particle size is 1-30mm, TiO2, SiO2, CaO2, Na2O, K2O and B2O3, and then feeding metal oxide particle which is evenly mixed in an electric stove, cooling to indoor temperature after melting for 1-5 hours under high temperature which is 1000 DEG C-1500 DEG C and atmospheric pressure, and then disintegrating in indoor temperature, screening to be powder which is -180 DEG C, feeding powder and water-soluble epoxide resin in a mixer hopper to dilute, and evenly stirring, and then preparing high temperature oxidation resistant lubricating paint whose concentration is 20%-40%. The paint of the invention can improve surface quality of extruded sections and service span of tool and molds, can improve rate of finished product, and can lower production cost ...

Electron beam cold hearth melting recovery method for titanium and titanium alloy chip scrap

The invention provides an electron beam cold hearth melting recovery method for titanium and titanium alloy chip-shaped waste. The method comprises a process that according to components of melted titanium and titanium alloy, pure titanium chip-shaped waste is weighed, or a mixture of one or two species of pure titanium chip-shaped waste and titanium alloy chip-shaped waste with sponge titanium and pure alloy additive elements and/or master alloy is weighed; the addition amount of pure titanium and titanium alloy chip-shaped waste in the mixture is counted as 10 to 90 percent according to mass percentage; the mixture is pressed to be an electrode block; and the electrode block is subjected to electron beam cold hearth melting once by use of an electron beam cold hearth melting furnace, so as to obtain a titanium or titanium alloy ingot. The method can utilize up to 100 percent of pure titanium chip-shaped waste to produce a qualified pure titanium ingot, or utilize up to 90 percent of titanium ...

Thermal treatment method for titanium alloy

The invention provides a thermal treatment method for a Ti53311S titanium alloy, in particular to a thermal treatment method for improving the 550 DEG C high temperature mechanical performance of a near-alpha type Ti53311S titanium alloy, which is characterized in that the thermal treatment process is divided into two stages: the first stage is the thermal treatment at the temperature of 930-980 DEG C, the insulating time is 30-90min, and the cooling mode is water cooling; the second stage is the thermal treatment at the temperature of 540-580 DEG C, the insulating time is 4-8h, and the cooling mode is air cooling. In the thermal treatment process, the accumulated deformation of titanium alloy hot working is larger than 95 percent, the forging temperature of the finished product is controlled inside alpha plus beta phrase regions, and the finish-forging temperature is higher than 900 DEG C. The adoption of the thermal treatment method of the invention can realize the Ti53311S titanium alloy ...

Preparation of low cost refractory metal material flow-off

The invention discloses a manufacture method for a refractory metal flow port with low cost, which comprises the following steps of: ball-grinding refractory metal powder recovered from turning process to-60 to-200 meshes; purifying the powder; adding into eligible powder of the same trademark according to a certain weight percentage and mixing completely; and subjecting the powder mixture to powder metallurgic method such as pressing and sintering to obtain the refractory metal flow port. The refractory metal flow port meets the requirement for use performance and can improve the yield, reduce the production cost, save limited refractory metal resources and protect the natural environment. The process is simple and can save energy resources and reduce consumption.

Method for cleaning titanium and producing titanium alloy casting ingot

The invention discloses a production method of pure titanium and titanium alloy casting ingot. The method comprises the following steps: sponge titanium or pure alloying element, intermadiate alloy and sponge titanium are weighed and taken, the sponge titanium or the pure alloying element, the intermadiate alloy and the sponge titanium are pressed into an electrode block, the electrode is smelted by using a vacuum consumable electro arc furnace, casting ingot of Phi 120 to 300 mm is obtained by first smelting; then the obtained casting ingot is smelted through electron beam cooling bed, after the smelting, the casting ingot is taken out of a casting ingot chamber, and the pure titanium or the titanium alloy casting ingot is obtained. The titanium and titanium alloy casting ingot produced according to the invention has the advantages that the chemical components are uniform, the macroscopic structure of the casting ingot is better than casting ingot smelted through the vacuum consumable ...

Method for preparing titanium alloy cast ingot

Method for preparing titanium alloy cast ingot

The invention discloses a preparation method of titanium alloy ingot. The method is that: fine-particle titanium sponge with average granularity ranging from 1 to 8mm and refractory metal powder with granularity from -100 to -200 meshes are stirred and blended for 1 to 5 hours in a mixer, according to a weight percentage of 2 - 5 : 1between titanium sponge and refractory metal powder, and then the mixture is put into an electrode block, other alloyed elements are added, and dense electrode blocks are pressed by a hydraulic machine; the dense electrode blocks are welded into electrodes via an argon arc welder, and molten into titanium alloy ingots by a vacuum self-consuming arc furnace. The preparation method of the invention is simple and easy to be operated, which can greatly reduce the production cost of titanium ingots, and the produced titanium alloy ingots are tested and proved to be homogeneous ingots without refractory metal elements segregation and impurities.

Method for cleaning titanium and producing titanium alloy casting ingot

Thermal treatment method for titanium alloy

The invention provides a thermal treatment method for a Ti53311S titanium alloy, in particular to a thermal treatment method for improving the 550 DEG C high temperature mechanical performance of a near-alpha type Ti53311S titanium alloy, which is characterized in that the thermal treatment process is divided into two stages: the first stage is the thermal treatment at the temperature of 930-980 DEG C, the insulating time is 30-90min, and the cooling mode is water cooling; the second stage is the thermal treatment at the temperature of 540-580 DEG C, the insulating time is 4-8h, and the cooling mode is air cooling. In the thermal treatment process, the accumulated deformation of titanium alloy hot working is larger than 95 percent, the forging temperature of the finished product is controlled inside alpha plus beta phrase regions, and the finish-forging temperature is higher than 900 DEG C. The adoption of the thermal treatment method of the invention can realize the Ti53311S titaniumalloy ...