摘要:
Provided is a method of producing a tempered glass sheet, comprising applying tempering treatment to a glass sheet by increasing the content of SiO2 in terms of mass in a surface region of a glass sheet through application of thermal treatment to the glass sheet to 1.03 or more times that in an interior region positioned at a depth of 1 μm from a surface of the glass sheet.
摘要:
Provided is a method of producing a tempered glass sheet, comprising applying tempering treatment to a glass sheet by increasing the content of SiO2 in terms of mass in a surface region of a glass sheet through application of thermal treatment to the glass sheet to 1.03 or more times that in an interior region positioned at a depth of 1 μm from a surface of the glass sheet.
摘要:
An injection flame burner in which temperature of the generated flame itself can be sustained around the flame. A plurality of double structure injection nozzles each consisting of an outer tube and an inner tube provided coaxially with the outer tube, are arranged such that hydrogen gas is ejected from one of the outer tubes and the inner tubes and oxygen gas is ejected from the other tubes, and the injection port of each injection nozzle is located on the injection surface. Each injection nozzle includes at least one main injection nozzle having an inner tube formed to spread toward the injection surface side, another sub-injection nozzle arranged around the main injection nozzle, wherein gas is injected from the inner tube of the main injection nozzle under a higher pressure state as compared with gas injected from the sub-injection nozzle.
摘要:
An injection flame burner in which temperature of the generated flame itself can be sustained around the flame. A plurality of double structure injection nozzles each consisting of an outer tube and an inner tube provided coaxially with the outer tube, are arranged such that hydrogen gas is ejected from one of the outer tubes and the inner tubes and oxygen gas is ejected from the other tubes, and the injection port of each injection nozzle is located on the injection surface. Each injection nozzle includes at least one main injection nozzle having an inner tube formed to spread toward the injection surface side, and another sub-injection nozzle arranged around the main injection nozzle, wherein gas is injected from the inner tube of the main injection nozzle under a higher pressure state as compared with gas injected from the sub-injection nozzle.
摘要:
The invention provides an alkali-free glass substrate small in the variation of the thermal shrinkage and a process for producing the same. An alkali-free glass substrate of the invention has an absolute value of a thermal shrinkage of 50 ppm or more when the alkali-free glass substrate is heated at a rate of 10° C./min from a room temperature, kept at a holding temperature of 450° C. for 10 hr and then cooled at a rate of 10° C./min.
摘要:
An antibacterial rockwool growth medium for hydroponics is used for hydroponic growth of rice, flowers and ornamental plants, fruitage, etc. The medium includes a rockwool base used as a culture medium for hydroponics, and an inorganic antibacterial agent is dispersed substantially uniformly onto an overall surface of the rockwool base or a part of the surface of the rockwool base.
摘要:
The present invention is aimed to provide a method for producing a glass substrate with a thickness of not more than 200 μm, which is satisfied with the quality required for a substrate on which a thin-film electric circuit is formed, and a sheet glass substrate obtained according to this method. The present invention is concerned with a method for producing a glass substrate having a sheet thickness of from 10 to 200 μm, including a forming step of forming a molten glass into a ribbon shape in accordance with a down draw method, an annealing step of annealing the glass ribbon, and a cutting step of cutting the glass ribbon to give a glass substrate, wherein an average cooling rate in a temperature range of from the (annealing point+200° C.) to the (annealing point+50° C.) is controlled to the range of from 300 to 2,500° C./min.
摘要:
The present invention is aimed to provide a method for producing a glass substrate with a thickness of not more than 200 μm, which is satisfied with the quality required for a substrate on which a thin-film electric circuit is formed, and a sheet glass substrate obtained according to this method. The present invention is concerned with a method for producing a glass substrate having a sheet thickness of from 10 to 200 μm, including a forming step of forming a molten glass into a ribbon shape in accordance with a down draw method, an annealing step of annealing the glass ribbon, and a cutting step of cutting the glass ribbon to give a glass substrate, wherein an average cooling rate in a temperature range of from the (annealing point+200° C.) to the (annealing point+50° C.) is controlled to the range of from 300 to 2,500° C./min.
摘要:
The present invention is related to a brake lining material for a heavy-load braking device. The present invention is to provide a novel brake lining material which can have extended useful life under heavy-load conditions, can retain stable coefficients of friction under such heavy load conditions, can have appropriate wear resistance and can reduce the wear of its opponent material significantly. In accordance with the present invention,the novel brake lining material is provided which comprises copper-base metal powder, refractory material powder and graphite powder, the metal powder containing iron powder and titanium powder and being used as a matrix, the refractory material powder and the graphite powder being sintered together with this matrix in a uniformly distributed state in the powder. For example, a brake lining material for a heavy-load braking device is provided, which comprises, on a base of its total weight, 10 to 20 % refractory material powder, 15 to 25 % graphite powder and, as the remainder, copper-base metal powder, in which the refractory material powder are sintered together with the copper-base metal powder in a uniformly distributed state in the powder.
摘要:
Provided are a process for producing a glass substrate usable for low-temperature p-SiTFT substrates directly in accordance with a down draw method, and the glass substrate obtained by the process. The process for producing a glass substrate includes a forming step of forming a molten glass into a ribbon shape in accordance with a down draw method, an annealing step of annealing the glass ribbon, and a cutting step of cutting the glass ribbon to give a glass substrate, in which, in the annealing step, an average cooling rate from the annealing point to the (annealing point −50° C.) is lower than an average cooling rate from the (annealing point +100° C.) to the annealing point.