32results about How to "Low number of scratches" patented technology

The invention relates to a method for chemically and mechanically polishing sapphire substrate slices in an immersed mode. The polishing method comprises the following steps that firstly, preprocessing is conducted, wherein the sapphire substrate slices are attached to a hard ceramic disk, the hard ceramic disk is installed on a main shaft of a polishing machine, a polishing gasket is installed on a rotating bottom disk, reverse osmosis pure water and a silicon dioxide polishing solution are mixed and added into the polishing machine, and the liquid level is kept between the upper liquid level line and the lower liquid level line of the polishing liquid; secondly, polishing is conducted, wherein the polishing machine is started for polishing the sapphire substrate slices, the polishing time ranges from 40 min to 80 min, and then the polished sapphire substrate slices are obtained; and thirdly, the finished sapphire substrate slices are washed. According to the chemical and mechanical polishing method, the temperature rising of the surface of the polishing gasket in the polishing process is small, the service life of the polishing gasket and an adsorption gasket is long, and no tiny scratch exists on the surfaces of the sapphire substrate slices in the polishing process.

The invention discloses a ruling system for an optical grating ruling machine. The ruling system comprise a support rack, a sliding sleeve, a guide rail and a driving system, wherein the sliding sleeve is provided with at least two groups of cutter frames that can slide on the guide rail in a reciprocating manner, and the driving system provides power support for reciprocating movement of the sliding sleeve. The ruling system disclosed in the application is provided with at least two groups of cutter frames for ruling at least two optical grating mother boards, ruling times can be reduced, optical grating manufacturing time can be shortened, and ruling efficiency can be improved. The invention also discloses the optical grating ruling machine equipped with the ruling system.

The invention relates to a method for manufacturing a solar thin film light transmitting component, belonging to the technical field of photovoltaic application. The manufacturing method adopts the following technical scheme: a front transparent electric conductive electrode, a thin film photoelectric conversion layer and a back electric conductive electrode are deposited on an insulating light transmitting substrate, and a plurality of son batteries are formed by cutting off the three thin films; then mechanical inscribing equipment is used for removing the front transparent electric conductive electrode, the thin film photoelectric conversion layer and the back electric conductive electrode (or the thin film photoelectric conversion layer and the back electric conductive electrode) in a direction parallel to or vertical to the son batteries, a pattern is inscribed by adjusting a needle head the equipment; as the photoelectric conversion layer in the patter is removed, therefore, lights can directly penetrate through the battery, thereby realizing the light transmitting function of the component. The manufacturing method can be used for realizing the preparation of the novel light transmitting component and has the characteristics of low cost, high efficiency, simple operation, short time consumption and the like while the output electrical property and the light transmission performance of the novel light transmitting component are not lower than that of the light transmitting component of the solar thin film battery prepared by the prior art.

The invention relates to the technical field of metal surface treatment, in particular to a metal surface grinding and polishing agent and a preparation method thereof. The metal surface grinding andpolishing agent is prepared from the following ingredients in parts by weight: 16 to 33 parts of grinding agents, 1 to 2 parts of anti-foaming agents, 0.5 to 2 parts of sodium carbonate, 0.5 to 2 parts of surfactants, 0.5 to 2 parts of fatty alcohol ammonium sulfate, 0.5 to 1.5 parts of surface dimming agents, 0.5 to 1.5 parts of corrosion inhibitors, 0.2 to 0.5 part of suspending agents, 0.2 to 0.6 part of anticoagulants and 60 to 70 parts of water. By using the metal surface grinding and polishing agent provided by the invention, during the grinding and polishing on the metal surface, the multi-time coarse grinding and medium grinding links in the middle can be reduced; the production efficiency is improved.

The invention provides a fabrication method of a printed circuit board. By designing a partition line during the formation step, the circuit board can be still connected with a plate after cutting andformation, particularly for fabrication of a small-size circuit board, a positioning hole is not needed to be formed in each circuit board, the appearance damage of the circuit board is reduced, andthe production efficiency and the qualified size of the circuit board are improved; in the detection step, the quality of a via hole, such as hole position and hole plug state can be judged by comparing difference between reflection intensity, detected by an infrared emission sensor, of an infrared ray after passing through a standard hole and a to-be-measured hole; and the quality of each loop ofthe circuit board is detected one by one, and the short-circuit condition of each loop of a to-be-detected circuit board is judged by comparing difference between inductance values, detected by a probe, of each loop of a standard circuit board and each loop of a to-be-detected circuit. The fabrication method has the advantages of high production rate, high detection efficiency, high detection accuracy and high cleaning efficiency and is convenient to process.

The invention discloses a preparation method of marble polishing powder. The method is characterized by comprising the following process steps of adding the following ingredients in percentage concentration by mass into a grinding machine: 47 to 53 percent of oxalate dihydrate, 12 to 15 percent of aluminum oxide and 5 to 10 percent of stannic oxide; performing grinding and uniform mixing; adding 6 to 10 percent of sodium binoxalate and 15 to 21 percent of stearic acid; performing grinding and uniform mixing; then adding 2 to 4 percent of paraffin powder and 0.3 to 1.0 percent of fatty alcohol polyoxy ether, wherein the sum of all ingredients is hundred percent; performing grinding and uniform mixing; obtaining the marble polishing powder with the particle diameter being 2.0 to 10 mu m. The polishing powder has the advantages that chemical reaction is taken between the polishing powder and marble in the polishing process; the chemical polishing characteristics are realized, so that the polishing effect of the polishing powder is good; the luster degree is high; scratch marks are few; the flatness and smoothness degree is high; the consumption is low; the corrosion of oxalic acid can be buffered through the addition of the sodium binoxalate.

The invention provides an axillary osmidrosis suction and scraping needle with a pointed end. The axillary osmidrosis suction and scraping needle with the pointed end is composed of a sucker body, a connector and a handle, wherein the front end of the sucker body is the pointed end, a positive side hole is formed in a sharp inclined face in an open state and is located in the same direction with the inclined face, a left side hole and a right side hole are formed in the two sides of the positive side hole, and a three-hole suction and scraping needle is formed; or a negative side hole is formed in the back face of the positive side hole, and a four-hole suction and scraping needle is formed. According to the axillary osmidrosis suction and scraping needle with the pointed end, the number, the size and the arrangement design of the side holes are reasonable, a whole holding portion can be covered, sucked and scraped by the needle at a time, the suction and scraping holes are reasonable in arrangement, and the portion within the small range can also be sucked and scraped. The pointed end inclined face facilitates inserting of the needle tightly attached to the dermis deep face, meanwhile, the inclined face of the pointed end is an effective suction and scraping part, requirements of a surgery are met, using is safe and effective, and population and using are easy.

The invention discloses a preparation method of a boron nitride composite polishing solution. The preparation method is characterized in that by mass, 28-38% of water, 18-26% of ammonium dichromate, 12-20% of zirconium oxychloride and 24-32% of nano boron nitride are added to a grinding machine, the grinding machine is started, and a BN-Cr2O3-ZrO2 compound is prepared through grinding, drying and calcining; by mass, 70-78% of water, 2.0-4.0% of lignosulfonate, 3.0-5.0% of isopropyl alcohol, 1.0-5.0% of potassium bromate and 14-22% of BN-Cr2O3-ZrO2 compound are added to a reactor, a stirring reaction is conducted for 4-6 h at the rotating speed of 300 r/min, and the boron nitride composite polishing solution is obtained. The preparation process is simple, conditions are easy to control, the production cost is low, and industrial production is easy. In the polishing process, the advantages of being good in liquid polishing effect, free of scratches, high in flatness, small in dosage, resistant to abrasion and easy to wash are achieved.

An electronic card connector (100) includes an insulative housing (1), a number of terminals (2), and a shielding shell (6). Each terminal includes an elastic portion extending upwardly and a contacting portion (23). The elastic portion is resiliently deformable in an up-to-down direction. A first part of the elastic portion is located in a first plane, and a second part of the elastic portion is located in a second plane forming a sharp angle with the first plane. The second part has a connecting portion (25) and a pair of frame portions (26) connected with two free ends of the connecting portion. Each terminal defines a front point and a rear point respectively located on the elastic portion. The front point is located at the front of the contacting portion and the rear point is located at the rear of the contacting portion along a card-inserting direction.

The invention provides an axillary osmidrosis pumping and scraping needle with a round head. The axillary osmidrosis pumping and scraping needle with the round head is composed of a sucking pipe body, a connector and a handle. The sucking pipe body is a cylindrical hollow pipe, the connector is located at the tail end of the sucking pipe body, the sucking pipe body is connected with the handle through the connector, the front end of the sucking pipe body is in the shape of a closed cone, a relatively-pointed head end is arranged at the front end of the sucking pipe body, and three or four side holes are formed in the portion close to the head end. According to the axillary osmidrosis pumping and scraping needle with the round head, the number, size, arrangement and the like of the side holes are reasonable in design, the side holes can pump, scrape and cover the whole holding position at a time, the pumping and scraping holes are reasonable in arrangement, and a small range can also be pumped and scraped. The design of the conical front end enables the needle to be tightly attached to and inserted into the deep face of the corium along the original layer face, the situations that the skin is penetrated, an operator is injured, and muscles in the deep face are damaged are avoided, and the axillary osmidrosis pumping and scraping needle with the round head meets operation requirements, is safe and effective to use, and easy to popularize and use.

The invention discloses a preparation method of polishing powder for granite polishing. The preparation method is characterized by comprising the following steps: (1) preparation of a ZrN-ZrO2-SiN2 compound: adding the following components: 42-48% of water, 25-30% of zirconium oxychloride, 10-15% of zirconium nitride and 10-15% of silicon nitride, performing stirring for dissolution, adding 2-4% of sodium hydroxide, performing stirring reaction at a room temperature, performing solid-liquid separation, drying, roasting, and crushing to obtain the ZrN-ZrO2-SiN compound; and (2) preparation thepolishing powder for granite: adding 32-38% of the ZrN-ZrO2-SiN compound, 12-18% of oxalic acid and 12-18% of ammonium binoxalate, performing grinding and uniform mixing, adding 15-20% of ammonium fluoborate and 15-20% of stearic acid, performing grinding and uniform mixing, adding 1.0-2.0% of sodium dodecyl sulfate, and performing grinding and uniform mixing to obtain the polishing powder for granite. The polishing powder has the characteristics of chemical polishing, and has a good polishing effect, high glossiness, few scratches, and high flatness and a small usage amount, and the corrosionof oxalic acid can be buffered with the addition of the ammonium bioxalate.