59results about How to "Increase hardness" patented technology

New tungsten carbides alloyed with fluorine in amounts up to 0.5 wt % and possibly with fluorocarbon compositions are described. It is possible to produce them by means of a new process of chemical vapor deposition, in which tungsten hexafluoride, hydrogen and a carbon-containing gas are used. A specific feature of the new process is the preliminary thermal activation of the carbon-containing gas. The tungsten carbide coatings are deposited on construction materials and items made from them. They possess enhanced resistance to wear, corrosion and chemicals.

The present invention provides a watch cover glass having high hardness and excellent abrasion, and also having flaw resistance and antireflection function even after being used for a long period of time.

[Means for Solving]

The watch cover glass of the present invention comprises a transparent substrate and, provided on at least one surface of the substrate, an antireflection film having a lamination structure that a SiO₂ and Si₃N₄ mixed film (hereinafter, referred to as SiON film) and a Si₃N₄ film are laminated and the outermost layer is the SiON film. According to the lamination structure, the proper antireflection effect can be obtained, the hardness of the antireflection film is increased and the abrasion resistance is remarkably increased. As a result, the watch cover glass provided by the present invention has properties such that even after being used for a long period of time, the surface of the antireflection film is not finely flawed and is not peeled off, and it hardly occurs that the hands or dial plate are invisible due to surface mist and the antireflection function can be maintained.

Disclosed is an organic-inorganic composite body having a very high hardness on the surface and an adequate hardness in the interior and on the back surface while having excellent adhesion to a substrate. Specifically disclosed is an organic-inorganic composite body mainly comprising a) a condensate of an organosilicon compound represented by Formula (I): R_nSiX_4-n, (wherein R represents an organic group having a carbon atom directly bonded to Si, and X represents a hydroxy group or a hydrolyzable group; n represents 1 or 2, with the proviso that when n is 2, each R may be the same or different, and when (4-n) is 2 or more, each X may be the same or different) and further comprising b) at least one photosensitive compound sensitive to light having a wavelength of 350 nm or less selected from the group consisting of metal chelate compounds, metal-organic acid salt compounds, metal compounds having 2 or more hydroxy groups or hydrolyzable groups, hydrolysates thereof, and condensates thereof; and/or a compound derived from the photosensitive compound, and c) a cured product of an ultraviolet-curable compound.

An inventive workpiece features on at least parts of its surface a wear resistant hard coating comprising the following composition Al_1-a-b-c-dCr_aX_bSi_cB_dZ, where x is at least one element from Nb, Mo, W or Ta; Z is one element or compound from N, C, CN, NO, CO, CNO; and 0.2<=a<=0.5; 0.01<=b<=0.2; 0<=c<=0.1; 0<=d<=0.1. Further a PVD process for depositing such a wear resistant coating is disclosed whereby at least one workpiece is installed in a vacuum coating system and said system is operated in a low pressure argon atmosphere utilizing at least two metal or metal alloy targets with at least temporarily addition of a reactive gas.

The invention relates to the field of metal cookware manufacturing, in particular to cookware with high wear resistance and aims to overcome the defects in the prior art. The cookware is high in non-stick layer adhesion strength, high in abrasion resistance and high in wear resistance. According to the technical scheme, a manufacturing method of the cookware includes the steps of firstly, forming a cookware body through die-casting; secondly, using a numerically controlled lathe to perform metal processing; thirdly, finishing and polishing; fourthly, removing oil on the surface of the cookware body; fifthly, cleaning the cookware body with purified water, 3% alcohol solution and oil dissolving agent, and drying; sixthly, guaranteeing that the base material of the cookware body is clean before spraying, sand blasting the surface of the cookware body after preheating, and using the high-pressure gas of a sand blasting machine to further roughen the surface of the cookware body; seventhly, spraying the cookware body for the first time, cleaning the cookware body, then loading the cookware body onto a spraying machine, and spraying metalizing materials which include TiO2 and Al2O3 to the cookware body.

A composite wire for producing a wear resistant and corrosion resistant coating on a substrate by thermal spraying, spray and fuse, or welding techniques are disclosed. The physical properties of the coating are particularly suited for high-temperature erosion-corrosion environments. The resultant coating exhibits good hardness, toughness, and bonding characteristics. The composite wire comprises a metallic outer sheath and an inner core containing boron carbide and chrome carbide.

The invention discloses a sympodial bamboo integration profile manufacturing method. The method is characterized by including the following steps: S1, soaking bamboo filaments of sympodial bamboo which are subjected to green planing and yellow removing in water for high-temperature stewing at temperature of 100-120 DEG C for at leat four hours, wherein the water contains, by mass, 5-10% of hydrogen peroxide and 0.5-1% of sodium hydroxide; S2, disposing wet bamboo filaments in a carbonization furnace for carbonizing at temperature of 130-15o DEG C and at pressure of 3-4 MPa for 4-6 hours; S3, drying for the first time, dipping in glue, and drying for the second time after glue dipping; S4, performing high-pressure forming at pressure of being not less than 1.2 t/cm2; S5, performing thermosetting for more than 10 hours at temperature of 80-150 DEG C under the condition that the pressure of being not less than 1.2 t/cm2 is maintained. By the sympodial bamboo integration profile manufacturing method, sympodial bamboo integration profiles meeting structural profile requirements can be manufactured.

The invention provides novel non-sintered biological stuffing rapid in biofilm formation and a preparation method thereof, relating to biological stuffing and preparation methods thereof and solving the technical problems that the existing biological stuffing has long biofilm formation time and poor effluent quality in water treatment processes and preparation processes are high in energy consumption and pollute the environment. The biological stuffing is prepared from sepiolite, medical stone, cement, polyvinyl alcohol, sodium alginate, hydrogen peroxide, ferric chloride, manganese sulfate, cobalt chloride and agar. The method comprises the following steps: I. heating and dissolving polyvinyl alcohol and sodium alginate, adding hydrogen peroxide after cooling, and mixing the components uniformly, thus obtaining a liquid mixture; II. mixing the liquid mixture with other solid components, granulating the mixture, putting the granules at normal temperature, drying and sieving the granules, curing the granules at high pressure and low temperature, steam-curing the granules at constant temperature, and cooling the granules at normal temperature, thus obtaining the biological stuffing. Compared with the common ceramsite, the biological stuffing has short biofilm formation time, good effluent quality and coarse surface and is beneficial for microorganism growth. The biological stuffing is applied to the fields of environmental applied materials and sewage treatment.

A medical device and a method and process for at least partially forming a medical device, which medical device has improved physical properties. The one or more improved physical properties of the novel metal alloy can be achieved in the medical device without having to increase the bulk, volume and/or weight of the medical device.

The addition of nanometer particles to electroless metal plating baths reduces or eliminates seeding in the electroless plating baths. The reduced seeding results in less inclusions or pitting in the coating. Usually the maintenance and frequent tank-cleaning schedule can be increased beyond the normal 2-3 day. The properties of the coating can be improved by the co-deposition of the particles into the bath. Properties such as hardness, corrosion resistance, and wear resistance were improved.

The invention discloses a wear-resistant corrosion-resistant stainless steel cup material. The material comprises the following chemical components of, by mass, 0.35-0.55% of C, 0.75-1.15% of Si, 0.80-1.20% of Mn, 5.50-8.50% of Cr, 0.55-0.85% of Cu, 0.18-0.38% of Mo, 0.20-0.40% of V, 0.20-0.06% of Co, 0.03-0.05% of Nb, 0.02-0.04% of Ti, 0.01-0.03% of Ce, 0.0010-0.0040% of Yb, 0.0010-0.0035% of B,the balance Fe and inevitable impurities. The stainless steel cup material has relatively high wear resistance and high corrosion resistance, low in cost, good in antibacterial performance, strength,hardness and heat resistance and excellent in comprehensive performance.

The invention discloses a high red hard boron-containing high speed steel and a preparation method thereof, and belongs to the technical field of wear-resistant material. The high red hard boron-containing high speed steel comprises the compositions of, by weight, 1.0-3.0 of B, 0.2-0.8 of C, 5.0-7.0 of Cr, 3.0-6.0 of Mo, 0.5-2.0 of Al, 0.5-1.5 of Si, 0.5-1.5 of V, 0.5-1.5 of Mn, and the balance Fe. The high red hard boron-containing high speed steel has excellent wearresistance, red hardness, and excellent harden ability. High hardness can be obtained by cooling only in the air, thus the highred hard boron-containing high speed steel is very suitable for the preparation of parts for use in high temperature wear conditions such as rolls. In addition, the production cost is low, productionprocess is simple, and promotion and application value is good.

The invention provides a thermal barrier coating preparation technology, and relates to a NiCrAlY coated YSZ thermal barrier coating powdered material preparing method. The method is characterized in that a high pressure water mist method is used for preparing a NiCrAlY alloy coated YSZ thermal barrier coating powdered material, coating powder is arranged on the surface of a high-temperature alloy sample in advanced, the sample is placed in a protection box with argon serving as protective gas, and a ladder bonding layer is prepared through laser wide-band cladding. According to the method, YSZ is coated with laser cladding NiCrAlY, and the ladder bonding layer which can reduce cracks generated by direct cladding of a ceramic layer and a metal base due to different linear expansion coefficients and improve the bonding intensity and thermal shock resistance of the coating.

The invention relates to a dead fish salvaging device and discloses a dead fish salvaging device based on the rotating type and the shaking simulation mode. The dead fish salvaging device comprises asalvaging machine body. The bottom of the salvaging machine body is fixedly connected with a floating bed. By arranging the floating bed, the dead fish salvaging device can float on the water surface,and salvaging operation is facilitated. The top of the salvaging machine body is fixedly connected with a servo motor, the output end of the front face of the servo motor is fixedly connected with arotating shaft A through a flat key, and a micromotion-type salvaging mechanism is arranged between the surface of the rotating shaft A and the left side of the salvaging machine body. The servo motorworks, thus the rotating shaft A works and drives the micromotion-type salvaging mechanism to shake in a left-right reciprocating mode, and a reciprocating-type shaking mechanism drives the bottom ofthe micromotion-type salvaging mechanism to shake in an up-down reciprocating mode through the rotating shaft, so that the salvaging effect is more diversified, and dead fishes near the water surfacecan enter the salvaging device; and the more dead fishes can be stored, and salvaging is facilitated.

The present invention discloses a bottle mouth crystallization heating method, which makes use of external heat energy. When a preform is mounted onto a plug finger of a base by the preform, a first heating source directly heats the external side of the bottle mouth to crystallize the bottle mouth, and a second heating source heats the plug finger of the preform being exposed from the bottom of the plug finger, so that after a heat absorber absorbs the heat, the heat absorber conducts heat energy to the plug finger. The plug finger with heat energy heats the internal side of the bottle mouth simultaneously, therefore to disperse heat energy evenly and rapidly to the internal and external sides of the bottle mouth for crystallization.

There are provided lamella structured thin films having ultralow dielectric constants and high hardness, and the method for manufacturing the same. In the lamella structured thin film, silica layers and air layers are alternately and repeatedly stacked on the surface of a wafer in the vertical direction. The method of manufacturing the lamella structured thin film includes, agitating silica sol solution containing surfactant and silica precursor, spin-coating the solution on silicon wafer, aging the wafer, and annealing the wafer to remove the surfactant and organic materials from the wafer. The lamella structured thin film has excellent mechanical strength and high chemical stability, and in particular, has significantly low dielectric constant of no more than 2.5 and high hardness. In the method of manufacturing the lamella structured thin film, semiconductor processes can be made simple and economical since only pure silica is used and no additionally surface treatment is performed.

The invention relates to a collapsing intensifier for sodium silicate-bonded sand used for casting. Raw materials of the collapsing intensifier for the sodium silicate-bonded sand comprise the components including ferric oxide magnetic powder, dickite powder, xanthan gum, ceramic micro powder, fluosilicate, bentonite and a surfactant. According to the collapsing intensifier, a mixture of the ferric oxide magnetic powder, the xanthan gum and the dickite powder serves as the collapsing intensifier, since the collapsing intensifier is adopted, produced combustible gas is little, most importantly,the situation that after casting-purpose sodium silicate which mainly contains sodium silicate, potassium metasilicate and lithium silicate is poured, sand removing is difficult can be reduced greatly, the collapsibility of the sand is remarkably improved, and the strength of the molding sand is obviously improved. On the premise that the gas evolution amount of a sand core is not increased, thecollapsibility of an inorganic bonding agent mainly containing the sodium silicate is greatly improved, the retained strength of the agent is greatly reduced, and the strength of the sodium silicate-bonded sand is improved.

The invention discloses carbon-free high-speed steel and a preparation method thereof. According to the carbon-free high-speed steel provided by the invention, iron powder is introduced to replace molybdenum powder and cobalt powder, and a small amount of LaB6 is introduced to improve the tempering resistance and red hardness of the material; and through joint addition of La and B, strengthening is caused, austenite transformation is delayed, structure coarsening and desolvation of alloy elements during tempering are inhibited, so that the red hardness and the hot hardness of the Fe-Co-Mo material are improved. Meanwhile, a preparation process is simple, the cost of the raw materials is reduced, the excellent cutter material performance is shown, and a prepared cutter can keep high hardness and is not sticky under the long-time cutting action, and important application value in the industry is achieved.

A series of welding filler wires with innovative composition design for fusion welding precipitation-hardened lightweight austenitic Fe—Mn—Al—C alloys. The first class of the welding filler wires is composed of 23-34 wt. % Mn, 7.5-11.5 wt. % Al, 1.35-1.95 wt. % C, with the balance being essentially Fe. After fusion welding, there are high-density of nano-sized (˜3-5 nm) (Fe,Mn)₃AlC carbides (κ-carbides) uniformly distributed within the austenite dendrite cells in the fusion zone (FZ). The amount of nano-sized (˜6-10 nm) κ-carbides existing within the eutectic regions is significantly increased and the size of the austenite dendrite cells is substantially reduced. The second class of welding filler wires has the composition of 23-34 wt. % Mn, 7.5-11.5 wt. % Al, 1.40-1.95 wt. % C, 0.1-2.5 wt. % Ti, 0.1-3.0 wt. % Nb, 0.1-2.5 wt. % V, with the balance being essentially Fe. The microstructure of the FZ in the as-welded condition results in formation of substantial amount of nano-sized (˜6-10 nm) face-centered-cubic structured ductile Ti-rich Ti-carbides, Nb-rich Nb-carbides and V-rich V-carbides within the eutectic regions. These carbides are extremely hard (2000˜3500 Hv), enhancing hardness of the obtained FZ.

Provided is a surface hardening method for surface hardening a sulfuric acid-anodized aluminum alloy oxide layer, which includes: pre-treatment in which various foreign substances, including an oxide film, attached to a surface of an aluminum alloy are removed; sealing treatment in which the aluminum alloy having been subjected to the pre-treatment is immersed in a sealing solution, whereby fine pores formed in a film are sealed; and heat treatment in which the aluminum alloy having been subjected to the sealing treatment is charged to, and thermally treated in, a heat treatment furnace and then naturally cooled. By lowering the withstand voltage of an aluminum alloy oxide layer and increasing the hardness by subjecting the same to sealing treatment and subsequent post-heat treatment, the present invention has the effect of providing an environmentally-friendly and crack-free lightweight material that can replace steel products.

A “cast-in-place” monolithic microporous polymer salt bridge for conducting electrical current in microfluidic devices, and methods for manufacture thereof is disclosed. Polymeric salt bridges are formed in place in capillaries or microchannels. Formulations are prepared with monomer, suitable cross-linkers, solvent, and a thermal or radiation responsive initiator. The formulation is placed in a desired location and then suitable radiation such as UV light is used to polymerize the salt bridge within a desired structural location. Embodiments are provided wherein the polymeric salt bridges have sufficient porosity to allow ionic migration without bulk flow of solvents therethrough. The salt bridges form barriers that seal against fluid pressures in excess of 5000 pounds per square inch. The salt bridges can be formulated for carriage of suitable amperage at a desired voltage, and thus microfluidic devices using such salt bridges can be specifically constructed to meet selected analytical requirements.

A coir fiber spring cushion adhesive, which consists of 350-400 parts of natural rubber, 15-20 parts of 20% concentration soapy water, 2-4 parts of rubber accelerator powder, 3-5 parts of rubber anti-aging agent powder, rubber It is prepared by mixing 1-2 parts of vulcanization accelerator powder, 10-13 parts of zinc oxide powder, 1-3 parts of ZDC powder, 60-80 parts of calcium carbonate powder, and 1-2 parts of potassium hydroxide solid; among them, rubber accelerator Powder, rubber anti-aging agent powder, rubber vulcanization accelerator powder and calcium carbonate powder need to be mixed with water in a ratio of 1:4, and zinc oxide powder, ZDC powder, calcium carbonate powder need to be mixed with water in a ratio of 1:2. The adhesive has good viscosity, elasticity and long-term anti-aging effect, which can keep the spring cushion from collapsing for 10-15 years.