124results about How to "High surface hardness" patented technology

To provide a curing composition suitable for forming an antifouling hard coat layer having high surface hardness, excellent in scratch resistance, and having an antifouling property lasting long; and to provide an optical information recording media having scratch resisting and antifouling properties, and persistent reading characteristics of records, the curing composition includes an actinic energy-curing resin, wherein the actinic energy-curing resin hass a silicone resin having a silicon content of from 23 to 32 weight %; and the optical information recording material has a light-transmitting layer formed by coating and curing the curing composition, wherein a coating amount of the silicone resin is from 0.4 to 45 mg/n².

The invention discloses a process for manufacturing a cold-rolled/cold-drawn precise welded steel pipe. The process comprises the following steps of: 1) feeding; 2) slitting; 3) processing the welded pipe; 4) deoiling and degreasing the finished product welded pipe at high temperature and washing at high temperature; 5) performing non-oxidation annealing on the welded pipe which is deoiled and degreased at high temperature; 6) pinching the head of the annealed welded pipe, and dipping the annealed welded pipe in rolling/drawing lubricating oil; 7) performing cold rolling/cold drawing on the welded pipe by using a cold rolling/cold drawing mill; and 8) comprehensively inspecting, packaging and putting in storage. By a cold rolling or cold drawing process, compact hardened films are formed on inner and outer surfaces of a pipe body through extrusion, the tensile strength, the surface hardness and the wear resistance of the steel pipe are improved obviously, and the application range of the steel pipe is widened. Meanwhile, by applying the non-oxidation annealing process, the processes of scouring, phosphorization and water and oil removing are eliminated, the process is shortened, the material and energy consumption in the technological process is reduced, the working efficiency is improved, and cost is reduced.

The process of preparing nanometer antiwear composite coating on the surface of metal base includes the following steps: 1. cleaning the surface of the metal base; 2. selecting one kind of the nanometer powder or the composition as the reinforcing body; 3. surface chemical treatment of the reinforcing body with chemical reagent; 4. adding the reinforcing body treating liquid into acid chemical nickel coating liquid as the base coating liquid; 5. immersing the metal base in the composite coating liquid while stirring to complete chemical coating; 6. water washing and drying the coated metal base; and 7. surface laser heat treatment of metal base. The present invention combines nanometer technology, chemical coating technology and laser heat treatment technology organically, and is simple, efficient, feasible and suitable for use in various kinds of metal material and product.

Provided is a polyorganosilsesquioxane capable of forming, when cured, a cured product that offers high surface hardness and good heat resistance, is highly flexible, and has excellent processability. The present invention relates to a polyorganosilsesquioxane including a constitutional unit represented by Formula (1). The polyorganosilsesquioxane includes a constitutional unit represented by Formula (I) and a constitutional unit represented by Formula (II) in a mole ratio of the constitutional unit represented by Formula (I) to the constitutional unit represented by Formula (II) of 5 or more. The polyorganosilsesquioxane has a total proportion of the constitutional unit represented by Formula (1) and a constitutional unit represented by Formula (4) of 55% to 100% by mole based on the total amount (100% by mole) of all siloxane constitutional units. The polyorganosilsesquioxane has a number-average molecular weight of 1000 to 3000 and a molecular-weight dispersity (weight-average molecular weight to number-average molecular weight ratio) of 1.0 to 3.0.

[R¹SiO_3/2]  (1)

[Chem. 2]

[R^aSiO_3/2]  (I)

[Chem. 3]

[R^bSiO(OR^c)]  (II)

[Chem. 4]

[R¹SiO(OR^c)]  (4)

The invention provides a flexible displaying device. The device comprises a flexible displaying panel, an optical glue layer, a flexible cover plate and a crush-resistance layer; the optical glue layer is arranged at the side, close to the flexible cover plate, of the flexible displaying panel; the crush-resistance layer is arranged between the optical glue layer and the flexible cover plate to reduce deformation of the optical glue layer due to pressure. By arranging the crush-resistance layer between the optical glue layer and the flexible cover plate in the flexible displaying device, the deformation of the optical glue layer due to pressure can be reduced, and then the surface hardness of the flexible displaying device is increased.

The invention discloses a novel material of a piston of a breaking hammer and a manufacturing process of the piston, belonging to the technical field of breaking hammers. The novel material is 18Cr2Ni4WA and comprises the following chemical components: 0.13-0.19% of carbon C, 0.17-0.37% of silicon Si, 0.30-0.60% of manganese Mn, not more than 0.025% of allowable residual content of sulfur S, not more than 0.025% of allowable residual content of phosphorus P, 1.35-1.65% of chromium Cr, 4.00-4.50% of nickel Ni, not more than 0.025% of allowable residual content of copper Cu, 0.80-1.20% of tungsten W and the balance of iron. The manufacturing process of the piston of the breaking hammer comprises steps of forging, normalizing and high-temperature tempering, machining, carburizing and quenching, subzero treatment, low-temperature tempering and finish machining. The piston of the breaking hammer, which is manufactured according to the method provided by the invention, is high in hardness and has better tensile property and the like than similar products in China; the problems that pistons of breaking hammers available in market are low in hardness and likely to be strained are solved; and the piston manufactured according to the method provided by the invention further has the advantages of low cost and good economical efficiency.

The invention relates to high strength low alloy wear resistance steel plate and a preparation method thereof. The steel comprises the following chemical compositions by weight percent: 0.18-0.22% of C, 0.2-0.5% of Si, 1.0-1.6% of Mn, 0.010% or less of P, 0.005% or less of S, 0.02-0.03% of Al, 0.016-0.022% of Ti, 0.16-0.20% of Cr, 0.0005-0.0015% of B and the balance Fe and inevitable impurities. The carbon equivalent (Ceq) is equal to 0.5% or less than 0.5%, while Ceq (%) = C + Mn/6 + Si/24 + Ni/40+ Cr/5 + Mo/4 + V/14. The preparation method of the steel plate comprises the process of preparing ultra-pure steel, and the preparation method is characterized in that the specific parameters are controlled as follows: the plate blank is heated to the temperature range of 1180-1200 DEG C, the heating time is not less than 150min; the screw-down rate for rolling each pass is 15-30%, the accumulated screw-down rate is not less than 70%, the starting temperature of hot rolling is 1050-1100 DEG C, the finishing temperature is above 950 DEG C; and the heat treatment is performed after the steel plate is rolled and the heat treatment comprises quenching and low temperature tempering steps, wherein the quenching conditions are that the steel plate is heated to the temperature range of 910-950 DEG C and the holding time is 3min/mm and the tempering conditions are that the steel plate is heated to 250 DEG C and the holding time is 2.5min/mm. The method of the invention can increase the wear resistance, welding performance, strength and hardness, simplify production process and reduce cost of steel plates.

The invention discloses a method for machining inner gear rings. The method includes steps of forging, normalizing, rough lathing, finish lathing, gear shaping, carburizing, pressure quenching and shot blasting. By the aid of the method, surface hardness, core structure and depth of a hardened layer of a gear ring are improved, machining cost is lowered, deformation of the gear ring is avoided assuredly, accordingly, the service life of the gear ring is prolonged, and the load capacity of a vehicle is enhanced.

In a recording medium having a porous ink-receiving layer containing alumina hydrate of boehmite structure formed on a base material, the alumina hydrate has crystallinity ranging from 15 to 80 and microcrystals of the alumina hydrate are directed to be parallel to a plane direction of the ink-receiving layer at a parallelization degree of not less than 1.5. The recording medium is employed in an ink-jet recording method conducting printing by ejecting ink droplets through an orifice onto the recording medium.

A process for producing the recording medium comprises the steps of: applying a coating liquid containing alumina hydrate of boehmite structure with shearing stress onto a base material; and drying the coated material to obtain a degree of parallelization of a microcrystal of the alumina hydrate with a plane direction of the ink-receiving layer of not less than 1.5.

The invention relates to a combined carburizing and quenching process for improving gear performance, which comprises the steps of intensive carburization with carbon potential of 1.0-1.2% cp, diffusion with carbon potential of 0.8-1.0% cp, cooling after temperature decreases to 600-620 DEG C and is constant for 1-2 hours, quenching heating, and tempering, wherein quenching heating is divided into a first stage and a second stage, and the quenching temperature at the second stage is higher than that at the first stage. The combined carburizing and quenching process has the advantages that carburization, isothermality and quenching are combined, so that the process time is shortened, the energy consumption in heat treatment is reduced, the technology energy saving is optimized, and the technical indicators of carburizing heat treatment for heavy-duty gear, including surface hardness, abrasion resistance, fatigue strength, and strength and toughness of the core, are effectively enhanced.

A chain tensioner includes a plunger axially slidably inserted in the cylinder for pressing a chain. The plunger defines in the cylinder a pressure chamber filled with hydraulic oil. The volume of the pressure chamber is variable with the axial movement of the plunger. The pressure chamber communicates with the outside of the cylinder through a restricted passage defined between sliding surfaces of the plunger and the cylinder. A spring biases the plunger in a direction to increase the volume of the pressure chamber. The cylinder is formed with an oil supply passage through which the pressure chamber communicates with the outside of the cylinder. The chain tensioner further includes a check valve which allows only a flow of hydraulic oil through the oil supply passage from the outside of the cylinder to the pressure chamber. The check valve includes an annular valve seat, a check ball which is movable into and out of contact with the valve seat, and a retainer formed by drawing and retaining the check ball. The retainer includes a tubular portion and a bottom at one end of the tubular portion. The tubular portion of the retainer is formed with an opening through which hydraulic oil can flow into and out of the retainer. The opening extends to a border between the tubular portion and the bottom of the retainer and is formed by punching the tubular portion from inside to outside thereof.

A golden ornament comprising a base material; a Ti coating whose Ti atom content is constant in the direction of coating thickness, formed on the base material in an atmosphere of inert gas other than nitrogen; a TiN gradient coating whose N atom content is sloped in the direction of coating thickness, formed on the Ti coating; a TiN coating whose Ti atom and N atom contents are constant in the direction of coating thickness, formed on the TiN gradient coating; an Au-TiN mixture gradient coating whose Au atom content is sloped in the direction of coating thickness, formed on the TiN coating; and an Au-TiN mixture coating whose Au atom, Ti atom and N atom contents are constant in the direction of coating thickness, formed on the Au-TiN mixture coating. Further, on this Au-TiN mixture coating, there may be formed an Au coating or Au alloy coating whose Au atom content is constant in the direction of coating thickness.

The invention discloses a steel ball surface strengthening process. The steel ball surface strengthening process is characterized in that austenite left on a steel ball is irregularly stricken at a certain speed through a roller after the steel ball is treated through quenching and tempering, and the austenite left on the steel ball is induced into martensite by phase transformation under the pressure effect of striking. The surface hardness of the steel ball is enhanced due to the change, and the surface compressing stress is increased, so as to provide conditions for meeting the requirements of surface roughness. So the processing quality of the steel ball is enhanced, and especially enhancing the dynamic performance of the steel ball is an effective way for producing steel balls with low noise.

A method of producing a laminate comprising preparing a substrate having curved surfaces; applying a photpolymerizable and curable composition containing a photochromic compound and a phosphorus-containing photopolymerization initiator onto the curved surfaces of the base member; and curing the photopolymerizable and curable composition by the irradiation with an active energy ray having a relative intensity profile of 0 to 5% of wavelength components of not shorter than 200 nm but shorter than 300 nm, 25 to 75% of wavelength components of not shorter than 300 nm but shorter than 400 nm and 25 to 75% of wavelength components of not shorter than 400 nm but not longer than 500 nm while maintaining the substrate at not higher than 100° C. This method makes it possible to form a homogeneous and thin film containing a photochromic compound at a high concentration and having a uniform thickness on the substrate having a curved surface, such as a spectacle lens that is generally available, and to impart photochromic properties while maintaining excellent mechanical and optical properties of the substrate.

The invention belongs to the technical field of glass materials, and particularly relates to a two-step-method chemically strengthened alkali aluminosilicate glass composition and a preparation methodthereof. The two-step-method chemically strengthened alkali aluminosilicate glass composition comprises the following components in percentages by mole: 53-65% of SiO2, 16-22% of Al2O3, 0.01-0.5% ofB2O3, 4-8% of Li2O, 8-14% of Na2O, 0.01-1% of K2O, 0.01-3% of MgO, 0-1% of ZnO, 0-4% of P2O5 and 0-0.1% of SnO2. The formula of glass is optimized and lithium and phosphorus are added in the glass toobtain the composition, the composition is chemically strengthened by a two-step method, thus, glass has high surface pressure stress and a deep ion exchange layer, and the surface hardness, scratch resistance and falling resistance of the glass are improved.

The invention relates to the technical field of windows, and provides a manufacturing method for manufacturing an intelligent window. The method includes the steps that dyeing, stretching and color complementing are conducted on a first polyvinyl alcohol film, and the upper surface and the lower surface of the first polyvinyl alcohol film are covered by first triacetyl cellulose membranes to be dried; dyeing, stretching and color complementing are conducted on a second polyvinyl alcohol film, the upper surface and the lower surface of the polyvinyl alcohol film are covered by a third triacetyl cellulose membrane and a second triacetyl cellulose membrane to be dried, the second triacetyl cellulose membrane is coated with a pressure-sensitive adhesive layer, and then thermocuring and spontaneous curing are conducted; first glass, a first polaroid, a liquid crystal coating, a second polaroid and second glass are sequentially stacked. The invention further provides the intelligent window. The intelligent window comprises the first glass, the first polaroid, the liquid crystal coating, the second polaroid and the second glass. The first polaroid comprises the first polyvinyl alcohol film and the first triacetyl cellulose membrane. The second polaroid comprises the pressure-sensitive adhesive layer, the second triacetyl cellulose membrane, the second polyvinyl alcohol film and the third triacetyl cellulose membrane.

The invention provides a surface treatment method of metal base materials, which comprises the following steps of: a. placing the metal base materials into electrophoretic paint, and forming an electrophoretic deposition layer on the surface of the metal base materials through electrophoretic coating, wherein the electrophoretic deposition layer contains at least one kind of materials of MoS2, graphite and WS2; and b. carrying out laser modification on the metal base materials obtained in step a under the protection of inert gas, wherein the laser power is 1.5 to 2.5KW, and the scanning speed is 225 to 1,800mm/min. The invention adopts a mode of combining the electrophoretic coating and the laser modification so that on the premise that the flat and smooth surfaces and low roughness of the metal base materials are ensured, the surface hardness and the wear resistance of the metal base materials and the adhesive force the electrophoretic deposition layer and the metal base materials can be obviously improved at the same time.

The invention relates to a wear-resisting cigarette film and a preparation method of the wear-resisting cigarette film. The wear-resisting cigarette film is composed of a lower surface layer prepared from co-polypropylene and anti-sticking agent, a middle core layer prepared from homo-polypropylene, antistatic agent and nucleating agent, and an upper surface layer prepared from co-polypropylene, modified polyacrylate and nucleating agent. The lower surface layer, the middle core layer and the upper surface layer are sequentially stuck to form a composite layer. The lower surface layer is prepared from, by mass, 96-97% of co-polypropylene and 3-4% of anti-sticking agent, the middle core layer is prepared from, by mass, 94-95% of homo-polypropylene, 1.5-5% of antistatic agent and 0.2-0.3% of nucleating agent, and the upper surface layer is prepared from 60-80% of co-polypropylene, 20-40% of modified polyacrylate and 0.4-0.5% of nucleating agent. Wear of the cigarette film in the product transportation process is reduced, and the loss of enterprises is reduced; and the wear resistance is excellent and exceeds that of imported cigarette films.

The invention discloses a coating for blades of a wind generation set, which is formed by polyurethane NEUKAPOL 1007, polyester ether NEUKADUR 1036, curing agents, auxiliaries, auxiliaries and titanium dioxide powder R930. Double-component polyurethane NEUKAPOL 1007 and double-component polyester ether NEUKADUR 1036 are chosen, the chosen polyurethane and polyester ether are low-viscosity resin with high hydroxyl values (respectively being 550-590 and 160-170), the resin is very small in molecular weight and can form coating films with high cross-linking density, the coating films have extra high surface hardness and excellent elasticity, bending resistance, elasticity and physical and mechanical performance and can avoid stress concentration, and therefore the coating films formed by the coating have good tensile strength, tearing strength and stone striking resistance, and service life of the wind generation set is ensured.

A silane-free coating composition includes a polar aprotic reactive diluent, a colloidal inorganic oxide, and a crosslinkable monomer that has a functionality of at least one.

The invention provides a novel wooden door coating method which comprises the following steps of: 1, carrying out sand papering on a base material, and removing dust; 2, performing priming paint spraying in vacuum by using UV, and curing with UV-light, wherein the times of the performing is determined according to the coating requirement; 3, after the priming paint is sanded with the UV, spraying PU (polyurethane) padding finish paint; and 4, after light sanding, spraying a PU surface, and completely drying to obtain a finished product. The novel wooden door coating method provided by the invention has the advantages of having no VOC emission when the priming paint is sprayed for coating in vacuum by using the UV, improving the board hardness, greatly increasing the productivity and the market competitiveness, and saving the production space at the same time.

The invention discloses a method for carbonitriding heat treatment of screws. The method comprises the following steps of: (1) cleaning the screws needing heat treatment; (2) adjusting the speed of a feeding machine; (3) adjusting the main speed of a continuous furnace to carry out continuous preheating, and carrying out carbonitriding heat treatment on the preheated screws, wherein the preheating temperature is controlled at 860-890DEG C, the carbon potential is 1%-1.2%, and the ammonia gas flow is 0.2-0.5nm<3>/h; (4) carrying out primary quenching; (5) carrying out secondary quenching by adopting quick brightening oil; (6) cleaning the surfaces of the screws; and (7) tempering at 370-420 DEG C for 70-90min. The surface hardness of the screws processed by adopting the method is larger than 450HV0.3, the core hardness is 280-350HV0.3, the toughness is high, the electroplating hydrogen embrittlement risk is low, and the wear resistance and fatigue strength are improved.

A modified PC/ABS alloy essentially consists of the following in mass fraction: 65 to 85 for PC/ABS, 10 to 20 for stiffening agent, 0.5 to 1 for coupling agent, 5 to 10 for bromide fire retardant, 1 to 3 for stibium fire retardant, 1 to 6 for plasticizer, and 0.2 to 0.5 for oxidation inhibitor. By adding harden stiffening agent, plasticizer and fire retardant in the mixing process, the modified PC/ABS of the invention improves the surface hardness of the PC/ABS alloy as well as to further achieve the surface hardness and fire resistance and meets the technological requirement with little changing of the mechanical properties of PC/ABS, thus widening the application of PC/ABS alloy.

The invention relates to Brinell hardness 450-level abrasion-resistant steel. The steel comprises, by weight, 0.17%-0.22% of C, 0.40%-0.60% of Si, 1.2%-1.45% of Mn, 0-0.01% of P, 0-0.005% of S, 0.6%-0.85% of Cr, 0-0.1% of Ni, 0-0.1% of Mo, 0.02%-0.05% of Als, 0-0.015% of Ti, 0-0.02% of V, 0-0.004% of B, and the balance Fe and inevitable impurities. The invention further provides a manufacturing method of the Brinell hardness 450-level abrasion-resistant steel. By the adoption of the manufacturing method, the abrasion-resistant steel has good abrasion resistance and high toughness, and meanwhile even pressure stress is achieved on the surface of the abrasion-resistant steel, so that the abrasion resistance and anti-fatigue performance are further enhanced. The abrasion-resistant steel is good in residual stress homogeneity, cracking and deformation cannot happen in the using process, abrasion resistance is achieved, and the service life is long.

The invention relates to the technical field of coatings, in particular to a double-liquid fluorocarbon coating applied to outdoor copper clad aluminum (CCA) plates and a preparation method thereof. Trifluorochloroethylene (FEVE) fluorocarbon resin is used as a main body and reacted with aliphatic polyisocyanate curing agent to form the double-liquid fluorocarbon coating applied to the outdoor CCA plates; the coating has excellent properties such as high weather resistance, water resistance, heat resistance, low temperature resistance and the like, and can meet the requirements for high weather resistance and rich colors when matched with a high weather resistant pigment; and particularly, the coating has high hardness, high scratch resistance and acid and alkali resistance required by outdoor severe environments.

The invention relates to a ceramic coating and a preparation method thereof, in particular to a nonsticking purple sand ceramic coating used for cooking utensil and a preparation method thereof. The nonsticking purple sand ceramic coating of the invention comprises 0-3.1 percent of polysiloxane, 0- 5.1 percent of aluminium sesquioxide, 0-2.1 percent of zinc oxide, 11.4-23.1 percent of silicon dioxide, 0.7-4.6 percent of alkyl cellulose, 12.4-27.6 percent of pigment, 21.9-37.8 percent of water and 12.1-25.6 percent of alcohol by weight percentage. The nonsticking purple sand ceramic coating of the invention can form a layer of compact ceramics at the surface of metal or metal allay, thus greatly improving the surface hardness of the cooking utensil and leading the coating to be more wearable; the non-viscosity of the coating is excellent; more importantly, the ceramic coating dose not change, react, generate harmful substances and pollute the environment and is safe and non-toxic towards human body under high temperature of 400 DEG C during 24h.

A process for generating a boride layer on the surface of Ti3SiC2 material includes proportionally mixing boron carbide powder, silicon carbide powder, silicon powder, potassium fluoroborate powder and sodium fluoride powder, burying the Ti3SiC2 material in said powder mixture, and heating at 1000-1200 deg.C for 2-10 hr for thermal diffusion to form TiB2 layer, which has high hardness.

The invention discloses a machining technology for an internal gear of a precision planetary reducer with the small tooth difference. The internal gear integrates the prominent features of an internal gear which is provided with a supporting bearing outer raceway and an arc containing groove as the hard tooth surface. The machining technology includes the steps that A, material selection is performed, and a blank is forged; B heat treatment is conducted; C, rough turning of an outer circle and an end face is carried out, and the outer circle is used as the datum to machine an inner hole and a bearing raceway; D, the arc containing groove is subjected to gear shaping machining; E, the raceway and the arc containing grove are subjected to quench hardening treatment; F, an inner circle, the outer circle and the end face are coarsely ground, and the bearing raceway is used as the datum to coarsely grind the arc containing groove; G, heat treatment is conducted again; H, the outer circle and the end face are accurately ground; and I, the bearing raceway and the arc containing groove are also accurately ground. By the adoption of the machining technology, the bearing raceway and the arc containing groove are machined using the same datum, so that machining precision is guaranteed, installation errors are reduced, and the high-precision requirement of the reducer is met; and due to the fact that the bearing raceway and the arc containing grove are subjected to quench hardening treatment, precision retaining ability and carrying capacity of the precision reducer are improved.

The invention discloses an enhanced engine valve. The enhanced engine valve comprises a valve retainer part and a valve rod part which are integrally molded together with the valve retainer part, wherein both the valve retainer part and the valve rod part are made from an austenite material; the conical surface of the valve retainer part is treated through a forging process to form a first hardened layer of which the hardness is 40HRC to 52HRC; the rod end face of the valve rod part is treated through the forging process to form a second hardened layer of which the hardness is 40HRC to 52HRC. The invention further discloses a manufacturing process of the enhanced engine valve. The manufacturing process has the beneficial effects that the conical surface and the rod end face needing to be hardened are hardened in at a blank stage of the valve, and the hardness of a surface being subjected to surface hardening treatment is higher than that of a surface being subjected to the conventional rolling treatment.

The invention discloses a surface hardening treatment method for a main cutter board of a loader shovel and relates to the technical field of construction machinery production. The surface hardening treatment method includes steps of surfacing the surface of the main cutter board of the loader shovel so as to form a metal surfacing layer with the thickness 3-5mm and surface hardness larger than HRC40 (Rockwell hardness 40) on the outer surface of a cutting edge. The surface process adopts carbon dioxide arc welding. The welding parameters include that welding wire materials are hard alloy surfacing wear-resistant welding wires with the diameter 1.6mm, carbon content 0.3-0.6%, chromium content smaller than 5% and molybdenum content smaller than 4%, the welding current is 220-240 amperes, arc voltage is 24-26 volts, and carbon dioxide gas flow is 12-16 liters per minute. Compared with the prior art, by the surface hardening treatment method, surface hardness of the main cutter board is improved, the integral strength of the main cutter board is kept, service life of the main cutter board is prolonged, and cost is low.