Crystallization method of lithium-aluminium-silicon system low-expansion glass-ceramics

Ultra lightweighting frame of color kinescope and design method thereof

The invention provides a super-lightweight frame for color picture tubes, and a design method thereof. The super-lightweight frame comprises a frame body, wherein not less than three groups of long-side reinforcing ribs are arranged in the major-axis direction of the frame body, namely on the long sides on two sides of the frame body; a group of short-side reinforcing ribs is arranged in the minor-axis direction of the frame body, namely on the short sides on two sides of the frame body; and the long-side and short-side reinforcing ribs have not less than three steps. The method can guarantee strength, reduce thermal arches and reduce at least one third of the weight of the frame, so as to remarkably reduce cost. The weight reduction of materials rapidly balances frame temperature and a shadow mask, which also helps to improve the thermal arches. The method has the advantages that the method can reduce the weight of the frame and cost and is favorable for dealing with the thermal arches ...

Material-saving design method for shield in color television picture tube

The invention discloses a material-saving design method for a shield in a color television picture tube, in particular a partition method of a changed internal shield. The internal shield design is changed the way of being partitioned into two parts along a short shaft into a way of being partitioned into two parts along a long shaft so as to lead the spreading shape to be suitable to the material distribution, which can improve the utilization ratio by about 15 percent, thereby achieving the purpose of lowering the cost.

Pressing technology for glass utensils with colour pattern

The present invention belongs to the techn field of laminated glass product. The said lamination process can produce colour-figured glass ware. Its annealing temp. is 520-580 deg.C and difference of expansion coefficients of matched glass is controlled within plus or minus 4X10 to the minus seventh power deg.C. The said simple techn process can produce various beautiful and practical glass wares.

Method for improving white field level of color picture tubes

The invention discloses a method for improving white field level of color picture tubes. The method comprises the following steps: parallelly moving a shadow mask from a first position to a second position to lead the distance from the shadow mask to the inner surface of a screen to be diminished by 0.3-0.5mm; keeping system parameters of a lighthouse lens unchangeable to lead the distance betweena red light source and a blue light source to be increased from S1 to S2, to lead a phosphor powder arrangement L1 to be a standard state; adjusting the red light source and the blue light source andcarrying out convergence by a red and blue electron beam arrangement L2. The invention reduces the space between the screen and the shadow mask to lead a black base arrangement to be restored the state before the screen and the shadow mask are adjusted, thus improving matching properties of the black base arrangement and the electron beam arrangement L2, and improving the picture quality of the color ...

Low-expansion glass-ceramics moulding method for lithium-aluminum-silicon system

The invention relates to a forming method for lithium-aluminum-silicon system low expansion microcrystalline glass. The process comprises the following steps: A, spreading upper paint on a working surface of a forming die comprising a lower die and a compression upper die, and drying the working surface of the forming die for standby; B, cutting microcrystalline sheet glass produced through a calendering method into pieces, and putting the microcrystalline sheet glass pieces into the lower die; C, preheating the compression upper die on a fire hole to more than or equal to 400 DEG C; D, picking the lower die containing the microcrystalline sheet glass into an electric furnace for preheating; E, picking the compression upper die into the furnace and placing the compression upper die above the microcrystalline sheet glass; and F, closing a furnace door, increasing, keeping and decreasing the temperature according to a temperature time curve, and after the softening and crystallization forming ...

Method for designing anode caps of color picture tubes

The invention discloses a method for designing anode caps of color picture tubes. The method comprises the following steps: firstly establishing a model coordinates of a color picture tube, wherein point O (0, 0, 0) is the center of the external surface of a screen, the direction of the long side of the screen is X axis, the direction of the short side of the screen is Y axis, and the direction vertical to the external surface of the screen is Z axis; secondly adjusting declination angle beta which is more than 110 degrees and less than 120 degrees; finally moving the position of the anode capto the X axis from the Y axis, or to the position which is within plus or minus 50mm far away from the X axis and is 30mm to 100mm from a sealing-in surface. The method solves the problem that no space on the Y axis of the short axis of a glass cone is left for placing the anode cap caused by increase of the declination angle beta and the problem that striking arc can be easily caused if the anode ...

A pure flat CRT

Method for designing anode caps of color picture tubes

The invention discloses a method for designing anode caps of color picture tubes. The method comprises the following steps: firstly establishing a model coordinates of a color picture tube, wherein point O (0, 0, 0) is the center of the external surface of a screen, the direction of the long side of the screen is X axis, the direction of the short side of the screen is Y axis, and the direction vertical to the external surface of the screen is Z axis; secondly adjusting declination angle beta which is more than 110 degrees and less than 120 degrees; finally moving the position of the anode cap to the X axis from the Y axis, or to the position which is within plus or minus 50mm far away from the X axis and is 30mm to 100mm from a sealing-in surface. The method solves the problem that no space on the Y axis of the short axis of a glass cone is left for placing the anode cap caused by increase of the declination angle beta and the problem that striking arc can be easily caused if the anode ...

Ultra lightweighting frame of color kinescope and design method thereof

The invention provides a super-lightweight frame for color picture tubes, and a design method thereof. The super-lightweight frame comprises a frame body, wherein not less than three groups of long-side reinforcing ribs are arranged in the major-axis direction of the frame body, namely on the long sides on two sides of the frame body; a group of short-side reinforcing ribs is arranged in the minor-axis direction of the frame body, namely on the short sides on two sides of the frame body; and the long-side and short-side reinforcing ribs have not less than three steps. The method can guaranteestrength, reduce thermal arches and reduce at least one third of the weight of the frame, so as to remarkably reduce cost. The weight reduction of materials rapidly balances frame temperature and a shadow mask, which also helps to improve the thermal arches. The method has the advantages that the method can reduce the weight of the frame and cost and is favorable for dealing with the thermal arches.

Method for designing CRT frame

The invention discloses a method of designing a CRT frame, which obtains the size and the shape of a bottom opening of the frame of the invention through designing the optimum size of a long shaft, a short shaft and the profiles of opposite angles of the bottom opening of the frame, and obtains the unity of contradiction under the conditions of guaranteeing the strength, reducing the hot doming, preventing the reflection, reducing the cost and the like, and obviously improves the one time success rate of the design of the frame. Particularly in a wide screen type CRT, the method can more obviously reduce the hot doming effect. The hot doming drift amount of a sensitive area in an active area of a screen is reduced by thirty percent through utilizing the method of the invention and improving the size and the shape of the bottom opening of the frame under the condition of not charging other conditions in a certain wide screen tube type research.

Plastic composite material

The invention relates to a plastic composite material, and belongs to the field of architectural decoration materials. The plastic composite material comprises a mixed material and an adhesive which are respectively packaged in a whole set, wherein the mixed material and the adhesive are mixed according to a set volume ratio to form the plastic material when in use; the mixed material comprises the following components in parts by weight: 5-10 parts of corn straw powder, 1-5 parts of straw filaments, 2-5 parts of water sand powder and 1-3 parts of cement powder; the adhesive comprises the following components in parts by weight: 5-10 parts of sodium silicate solutions and 0.001-0.002 part of waterproof agents; and the mixed material and the adhesive are mixed according to the set volume ratio to form the plastic material when in use. The plastic composite material disclosed by the invention can be used for preparing a compression moulding forming product or preparing a stacking forming ...

Material-saving design method for shield in color television picture tube

The invention discloses a material-saving design method for a shield in a color television picture tube, in particular a partition method of a changed internal shield. The internal shield design is changed the way of being partitioned into two parts along a short shaft into a way of being partitioned into two parts along a long shaft so as to lead the spreading shape to be suitable to the material distribution, which can improve the utilization ratio by about 15 percent, thereby achieving the purpose of lowering the cost.

A pure flat CRT

Low-expansion glass-ceramics moulding method for lithium-aluminum-silicon system

The invention relates to a forming method for lithium-aluminum-silicon system low expansion microcrystalline glass. The process comprises the following steps: A, spreading upper paint on a working surface of a forming die comprising a lower die and a compression upper die, and drying the working surface of the forming die for standby; B, cutting microcrystalline sheet glass produced through a calendering method into pieces, and putting the microcrystalline sheet glass pieces into the lower die; C, preheating the compression upper die on a fire hole to more than or equal to 400 DEG C; D, picking the lower die containing the microcrystalline sheet glass into an electric furnace for preheating; E, picking the compression upper die into the furnace and placing the compression upper die above the microcrystalline sheet glass; and F, closing a furnace door, increasing, keeping and decreasing the temperature according to a temperature time curve, and after the softening and crystallization forming ...

Ultralow-expansion coefficient high transparent microcrystalline glass and method for producing its product

The present invention relates to a Li₂O-Al₂O₃-SiO₂ system ultra-low expansion coefficient high-transparency glass-ceramic and production method of the products. Calculated by weight percentage, the ultra-low expansion coefficient high-transparency glass-ceramic is composed of 3.2 to 4.6 percent of Li₂O, 18.0 to 23.6 percent of Al₂O₃, 64.1 to 69.4 percent of SiO₂, 0.3 to 0.8 percent of MgO, 0.8 to 2.5 percent of BaO, 0.3 to 0.8 percent of R₂O, 0.01 to 0.4 percent of Y₂O₃, 1.8 to 2.5 percent of TiO₂, 1.6 to 2.4 percent of ZrO₂, 1.1 to 1.8 percent of P₂O₅, 0.6 to 1.5 percent of Sb₂O₃, 0.3 to 1.0 percent of NaCl and 1.0 to 2.0 percent of NH₄NO₃. The heat-resistant glass plates and heat-resistant glass products can be manufactured by using the formula and the corresponding forming die.

Chinese medicine preparation for treating esophagus cancer and stomach cancer

The present invention discloses a Chinese medicine preparation for curing esophagus cancer and gastric cancer, which is made from the following crude drugs with the weight portions: 5 to 25 portions of clove, 20 to 45 portions of agalwood, 30 to 60 portions of villous amomum fruit and 5 to 15 portions of broiled liquorice. The medicine provided by the present invention can be made into powder, oral liquid, pill, tablet and capsule according to the existing regular process. The present invention has the efficacy of regulating stomach and strengthening spleen, promoting qi circulation and dissipating blood stasis, stimulating blood circulation and eliminating dampness, reducing swelling and alleviating pain. Compared with the prior technology, the present invention with reasonable prescription, good curing effect and safe administration can rapidly improve esophagus cancer obstruction, vomit and stomachache and inhibit to some extent the development and expansion of cancer cells.

Method for designing CRT frame

Frame structure of wooden door

The utility model relates to a frame structure of a wooden door. The whole frame is changed to adopt a plurality of small wood blocks to splice and assemble from adopting a whole flitch originally. Compared with the flitch, the utility model not only prevents the deformation problem of a door frame, but also improves the utilization rate of timber. The utility model has the obvious advantages of good quality and low cost.

Chinese medicine preparation for treating esophagus cancer and stomach cancer

The present invention discloses a Chinese medicine preparation for curing esophagus cancer and gastric cancer, which is made from the following crude drugs with the weight portions: 5 to 25 portions of clove, 20 to 45 portions of agalwood, 30 to 60 portions of villous amomum fruit and 5 to 15 portions of broiled liquorice. The medicine provided by the present invention can be made into powder, oral liquid, pill, tablet and capsule according to the existing regular process. The present invention has the efficacy of regulating stomach and strengthening spleen, promoting qi circulation and dissipating blood stasis, stimulating blood circulation and eliminating dampness, reducing swelling and alleviating pain. Compared with the prior technology, the present invention with reasonable prescription, good curing effect and safe administration can rapidly improve esophagus cancer obstruction, vomit and stomachache and inhibit to some extent the development and expansion of cancer cells.

Ultralow-expansion coefficient high transparent glass-ceramics and method for producing its product

The present invention relates to a Li₂O-Al₂O₃-SiO₂ system ultra-low expansion coefficient high-transparency glass-ceramic and production method of the products. Calculated by weight percentage, the ultra-low expansion coefficient high-transparency glass-ceramic is composed of 3.2 to 4.6 percent of Li₂O, 18.0 to 23.6 percent of Al₂O₃, 64.1 to 69.4 percent of SiO₂, 0.3 to 0.8 percent of MgO, 0.8 to 2.5 percent of BaO, 0.3 to 0.8 percent of R₂O, 0.01 to 0.4 percent of Y₂O₃, 1.8 to 2.5 percent of TiO₂, 1.6 to 2.4 percent of ZrO₂, 1.1 to 1.8 percent of P₂O₅, 0.6 to 1.5 percent of Sb₂O₃, 0.3 to 1.0 percent of NaCl and 1.0 to 2.0 percent of NH₄NO₃. The heat-resistant glass plates and heat-resistant glass products can be manufactured by using the formula and the corresponding forming die.

Broadband wide-angle circularly polarized phased-array antenna

The invention provides a broadband wide-angle circularly-polarized phased-array antenna. The broadband wide-angle circularly-polarized phased-array antenna comprises an antenna unit, a feed network, a metal grounding plate and a feed SMP connector, the antenna unit comprises an annular parasitic patch, a first dielectric substrate, an annular excitation patch and a second dielectric substrate, the annular parasitic patch is located on the upper surface of the first dielectric substrate, the position, corresponding to the annular parasitic patch, of the first dielectric substrate is hollowed to form an air cavity, the annular excitation patch is located on the upper surface of the second dielectric substrate, and the annular excitation patch is located on the upper surface of the second dielectric substrate. A metalized through hole is formed in the position, corresponding to the annular excitation patch, of the second dielectric substrate, and a metal coating is arranged on the lower surface ...

Preparation method of transition metal carbide quantum dot/nitrogen-doped carbon composite material

The invention relates to a preparation method of a transition metal carbide quantum dot/nitrogen-doped carbon composite material. The preparation method comprises the following steps: dissolving amino acid serving as a carbon source and a nitrogen source in ultrapure water, and fully dissolving; adding transition metal salt into the amino acid solution to obtain a homogeneous solution, and fully stirring the solution at room temperature; and heating the uniformly stirred solution in a water bath until most crystals are separated out, then drying and grinding to obtain a precursor of the carbide catalyst, and then carrying out high-temperature calcination to synthesize the transition metal carbide quantum dot/nitrogen-doped carbon composite material. The transition metal carbide quantum dot/nitrogen-doped carbon composite material is synthesized by adopting a simple one-step method instead of a template method, and the method is convenient to operate, short in preparation period, simple ...