1158results about How to "Strong corrosion resistance" patented technology

The invention relates to the field of aluminum alloy surface treatment, in particular relates to an environmentally-friendly corrosion-resistant chromium-free chemical conversion liquid and an application thereof in an environmentally-friendly corrosion-resistant chromium-free chemical conversion film with aluminum alloy coating adhesion for ships, and solves the problems of incapability of meeting the requirements on corrosion resistance and coating adhesion in the current environmentally-friendly chemical conversion treating process. The prepared chemical conversion film has excellent corrosion resistance and coating adhesion, is convenient in construction and can be used for substituting for a traditional chromium-containing chemical conversion and phosphate treatment process. The environmentally-friendly corrosion-resistant chromium-free chemical conversion liquid mainly comprises the components of silane, corrosion inhibition components and a solvent. The chromium-free chemical conversion film construction modes comprise dipping, roller painting and spraying, and the curing modes comprise natural curing and heating curing. The environmentally-friendly corrosion-resistant chromium-free chemical conversion film in the invention has excellent corrosion resistance and coating adhesion, can be used for substituting for a traditional chromium-containing chemical conversion and phosphate treatment process, and is applicable to aluminum alloys for ships such as 5xxx and 6xxx series aluminum alloys.

The invention relates to electrolysis solution and a preparation method thereof as well as a preparation method for an obtained aluminum capacitor. The electrolysis solution is composed by the components according to the following weight by parts: 38.5-85.7 wt % of primary solvent, 5-25 wt % of auxiliary solvent, 4-20 wt % of solute, 5-15 wt % of modified additive, 0.2-1 wt % of hydrogen eliminating agent and 0.1-0.5 wt % of waterproof combination agent. The primary solvent is glycol; the auxiliary solvent is one or more of tributyl phosphate, mono butyl ester phosphate, diglycol dibutyl ether; the solute is one or more of ammonium sebacate, 1.6-dodecyl ammonium bisgallic acid, 1.10-dodecyl ammonium bisgallic acid organic carboxylate. In the preparation method for the aluminum capacitor using the electrolysis solution, positive pressure and vacuum-pumping is required to be applied in an impregnation tank in an alternate recycle way with the recycle impregnation interval period being 20-60min.The electrolysis solution has the characteristics of high temperature resistance, high sparking pressure and strong corrosion resistance. The screw large capacitor has a service life of 8,000 hours at 105 DEG C or 2,000 hours at 125 DEG C.

The invention discloses a test bench device of quasi three-dimensional visualization models with high geostress and comprises a reaction wall device, a door-typed reaction frame is arranged in the side periphery of the reaction wall device, a hydraulic loading device is arranged between the door-typed reaction frame and a model body, and a plurality of observing windows are arranged surrounding the position of a perforated chamber on the reaction wall device. The test bench device can be used for implementing the experimental research on the geomechanical plane strain models in the stability research of underground engineered tunnels under high geostress condition. The test bench device has the following advantages: 1. a steel frame of the model adopts a high-intensity alloy steel material, thus having good intensity, rigidity and toughness, strong corrosion resistant capacity, and repeated and recycled use in a long time; 2. an external loading method is adopted, thus conveniently realizing jobs such as the installation and the replacing of loading equipment such as hydrostatic triggers, etc.; 3. a toughened glass is arranged surrounding a hole of the reaction wall, thus being convenient for observing the deformation and the crack propagation situation in the surrounding of the hole; 4. an assorted control system of hydraulic loading is combined, thus conveniently realizing graded loading and simulating real geostress distribution situation as accurately as possible.

The invention discloses a seashell-diatom ooze wall surface decoration wall material and a production and construction method thereof. The decoration wall material comprises: 20 to 98 parts of shell powder, 8 to 30 parts of silica, 4 to 100 parts of kieselguhr, 2 to 20 parts of medical stone, 3.8 to 48 parts of mica powder, 2 to 10 parts of magnesium-rich silicate, 6 to 26 parts of scolecite, 1.5to 36 parts of hydrosilicate, 0 to 50 parts of titanium dioxide powder, 2 to 50 parts of calcium carbonate, 0.1 to 0.3 part of vegetable fiber, 1 to 30 parts of pigment, 4.8 to 40 parts of kelp powder, 1 to 30 parts of cold soluble polyvinyl alcohol powder and 1 to 20 parts of hydroxypropyl methyl cellulose. The production and construction method comprises: placing the raw material components into a stirrer for uniform stirring; filling the mixture in bags, packing the bags in boxes, sealing the boxes and storing the boxes in a storehouse; adding water into the mixture and stirring the mixture uniformly; and pasting the mixture on a wall surface to be decorated to make various texture patterns. The seashell-diatom ooze wall surface decoration wall material has the advantages of: (1) soft texture and no toxicity, fading nor stripping; (2), characteristics of eliminating indoor pollution, regulating indoor humidity, eliminating odor, isolating noises and offering high skin texture feel; (3) fire proofing and flame retarding; and (4) rich color.

The invention relates to an amorphous refractory; especially to an erosion resistance concast intermedium finish-go-home work sark. It uses magnetite as main raw material and the light-burned magnesium oxide, boric acid, silicon powder and aluminum powder as accelerator and the resin, starch gum and so on as insurance contract. It adds one or some kinds of chrome green, compound chrome-magnesite brick, magnesite-chrome brick. The raw material is that (wt%): the magnesite 5-1mm is 10-35%, 1-0.2mm is 10-35%, <=0.074mm is 20-40%, <=0.088mm admixture is 5-20%, <=0.088mm accelerator is 1-5%, starch gum is 5-12%. Each raw material has a certain quality technology index.

A kind of anticorrosion asphalt-based epoxy resin water paint is proportionally prepared from modified asphalt emulsion, epoxy resin emulsion, solidifying agent emulsion, filler, assistant and water. Its advantages are high hardness, resistance to corrosion and abrasion, adhesion and softening point, and low pollution.

The present invention relates to a magnesium alloy surface microarc oxidation method. Said method includes the following steps: (1), pretreatment; (2), preparing alkaline silicate electrolyte or alkaline aluminate electrolyte; and (3), placing the pretreated magnesium alloy in the alkaline silicate electrolyte or alkaline aluminate electrolyte and making microarc oxidation; applying DC current, continuously rising voltage, constant current, current density is 1-15 A/sq.dm, galvanization time is 5-90 min and electrolyte temperature is less than 40 deg.C.

The invention discloses a hydraulic support plunger outer surface laser cladding repairing method. The hydraulic support plunger outer surface laser cladding repairing method comprises the following steps that firstly, turning is carried out on the outer surface of a hydraulic support plunger to be repaired to remove a fatigue layer and an electroplated layer on the outer surface of the hydraulicsupport plunger, and the outer surface of the hydraulic support plunger is washed; secondly, iron-base alloy powder for laser cladding is put into laser cladding equipment, the laser cladding equipment is used for carrying out laser cladding on the outer surface of the hydraulic support plunger, and a laser cladding layer is formed; thirdly, rough turning is carried out on the hydraulic support plunger which is subjected to laser cladding; fourthly, abrasive machining and polishing treatment are carried out on the hydraulic support plunger which is subjected to rough turning, and the roughnessRa of the outer surface of the polished hydraulic support plunger is smaller than or equal to 0.4; and fifthly, checking and flaw detection are carried out on the outer surface of the polished hydraulic support plunger, and laser cladding repairing of the outer surface of the hydraulic support plunger is completed after it is ensured that no defect exists. The laser cladding layer formed throughthe repairing method is high in hardness, large in thickness and high in corrosion resistance and longer in service life.

Neutral borosilicate glass used for moulding medicinal bottles is provided, which pertains to the technology filed of glass containing aluminum, boron, 40 percent to 90 percent (by weight) of silicon dioxide and provides neutral borosilicate glass meeting the standard of medical packaging container (material) YBB00292002, YBB00322002. The glass contains 8-12 percent of B2O3 with expansion coefficient of 4.0-5.0 multiplied by 10<-6>/K, as well as a series of excellent physical and chemical properties such as good heat stability, strong acid-resistance, alkali-resistance, water-resistance and erosion-resistance. The invention adopts cold furnace top and deep bed, recycles volatiles of boron during the course of melting, thus effectively reducing boron volatilization, preventing unfavorable phenomenon from taking place, for example, the combined material layer from incrustation and reversing, and obtaining comparatively good economic benefit and quality benefit.

The present invention relates to a novel stainless bearing steel and the making method with a weight percentage of components as follows: C 0.3-0.6 percent, Cr 14.00-17.00 percent, Ni 0.29-2.50 percent, Mo 1.00-3.00 percent, N 0.10-0.30 percent, Mn less than or equal to 1.00 percent, Si less than or equal to 1.00 percent, S less than or equal to 0.03 percent, P less than or equal to 0.035 percent, trace element less than or equal to 0.50 percent and the remainder is Fe. Compared with the prior art, the novel stainless bearing steel has an excellent mechanical property, wearing resistance performance and processing performance, is high in hardness, powerful in wearing resistance, suitable for moderate corrosive surroundings such as oceans, petroleum, chemical engineering, foodstuff, paper making and so on and is convenient for manufacturing rolling and sliding bearings of various types.

The invention relates to coating technology, in particular to an environment-friendly polyaniline modified aluminium powder anti-corrosive coating and a preparation method thereof to solve the problemthat the prior aluminium powder coating has poor corrosion resistance, and is matched with harmful lead-containing and chromate-containing pigment in the manufacturing process. The environment-friendly polyaniline modified aluminium powder anti-corrosive coating comprises a film forming matter, polyaniline modified aluminium powder and the like. A polyaniline coating layer is formed on the surface of the aluminium powder by an oxidative polymerization method; the treated aluminium powder has passivating effect on metal; and a phytic coating layer on the surface of the aluminium powder also has corrosion inhibiting effect on the metal. The environment-friendly polyaniline modified aluminium powder anti-corrosive coating has strong corrosion resistance and permeability resistance, and can be applied to anti-corrosive projects such as petrochemical equipment, pipelines, offshore oil platforms, wharf facilities, shipping and the like.

The invention relates to coating technology, in particular to an environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating and preparation method thereof, which solves theproblem that the prior micaceous iron oxide coating has poor anticorrosion performance, and needs to be matched with pigments containing lead and chromate during manufacturing. The environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating comprises film-forming material, polyaniline modified micaceous iron oxide, and the like. As polyaniline coating layers are formedon the surfaces of the micaceous iron oxide by an oxidative polymerization method, the treated micaceous iron oxide has the effect of passivating metal, and phytic-acid coating layers on the surfacesof the micaceous iron oxide play a role in inhibiting corrosion of metal. The environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating has strong corrosion resistance andpermeation resistance, can be applied to heavy-duty engineering of petrochemical equipment, pipelines, offshore oil platforms, wharf facilities, ships and the like.

The invention discloses lignin raw lacquer composite coating. The lignin raw lacquer composite coating prepared mainly comprises raw lacquer, lignin, functional auxiliary agent and diluting agent. The lignin raw lacquer composite coating introduces the lignin extracted from sulphite liquor into the raw lacquer, and effectively utilizes the lignin in the sulphite liquor and reduces the cost when the performance of the raw lacquer is maintained simultaneously. The product is acid resistant, alkali resistant, water resistant, oil resistant and abrasion resistant, has high glossiness and strong adhesion, and is suitable for anti-corrosive application in deep color hardwood furniture and the industry.

The invention relates to the field of an aluminium alloy decoration and protection coating for ships, and in particular relates to a novel aluminum alloy chromium-phosphorus-free nanoscale chemical conversion liquid for ships and an application of the chemical conversion liquid in a chemical conversion film. The chromium-phosphorus-free nanoscale chemical conversion liquid is prepared from a titanium salt, a zirconium salt, a silicon compound, an accelerator, a pH modifier, a surfactant and the like. The film-forming process of the chromium-phosphorus-free nanoscale chemical conversion film successively comprises the following steps of degreasing, washing, acidic etching, washing, chemical conversion, washing and drying. The chromium-phosphorus-free chemical conversion film is prepared from nanoscale titanium oxide, zirconium oxide, alumina and other composite oxides, has excellent corrosion resistance and organic coating adhesion, and can be used as an aluminum alloy surface decoration and protection coating for ships. The chemical conversion film prepared from the chemical conversion liquid in the invention does not contain chromium and phosphorus elements, has excellent corrosion resistance and organic coating adhesion, is simple in construction and convenient in maintenance, and is applicable to construction of large-area aluminum alloy sections.

The invention discloses a diamond composite plating layer, which is plated on surfaces of a steel-iron alloy. The diamond composite plating layer comprises an inner layer and an outer layer, wherein the inner layer is a transition layer which is formed by plating chemical nickel containing phosphorus in a chemical nickel plating mode, and the outer layer is formed by carrying out co-deposition on diamond particles and a nickel-phosphorus alloy to the plating layer in a chemical nickel plating mode so as to form a nickel-phosphorus-diamond particle composite plating layer. By using the technical scheme, the transition layer can improve the bonding force of the plating layer, prevent the diamond particles from directly contacting the steel-iron alloy, and prevent the diamond particles from being absorbed by the steel-iron alloy in a carbon atom form; the nickel-based diamond particle composite plating layer is a high-temperature (140 DEG C) wear-resistant composite plating layer, does not need heat treatment, has apparent hardness higher than 700 HV, and has no influence on the physical properties of a base material; and the nickel base of the composite plating layer is a nickel-phosphorus alloy, therefore the plating layer has excellent corrosion resistance.

A casing of electronic devices comprises a plastic casing, a metal coating and an oxidized layer formed on the surface of the metal coating by anodizing. The method for manufacturing the casing of electronic devices, including the following steps: (1) ejecting and forming the above plastic casing; (2) forming in metal coating on the surface of the plastic casing; (3) anodizing the plastic casing with the metal coating. In such a way, the casing of electronic devices has a metal sense and a strong erosion resistance. The method can continue the tinctorial processing after the step (3) to acquire the required color or pattern.

The invention relates to a porous superfine polyamide 6 fully-drawn yarn, a preparation method thereof, and equipment thereof. According to the invention, existing FDY production equipment is adopted. A raw material polyamide 6 is sliced and dried; an additive is added on line; the material is subject to screw extrusion and melt extrusion; the material is then cured with a gradually cooling manner and a circular air blow cooling manner; with a reasonably selected spinning temperature of 259-262 DEG C, an air temperature in the circular air blowing process of 19-23 DEG C, a humidity of 85-95%, an air velocity of 0.35-0.45m/s, an oiling and clustering position of 700-800mm, and a winding speed of 4100-4600m/min, the porous superfine polyamide 6 fully-drawn yarn product with a specification of 55dtex/144f-75dtex/144f is prepared. Flexible operation is adopted in the preparation method. The preparation method is advantaged in simple technology and low production cost. The product is advantaged in stable performance, good yarn evenness, and good coloration property.

The invention discloses a baking varnish for a magnesium aluminum alloy base material and preparation and using methods thereof. The preparation method comprises the following steps of: (1) adding polyester modified acrylic resin, epoxy resin, an anti-forming agent, a dispersing agent, a wetting agent, a leveling agent, and a part of solvent in a certain ratio into a stirring kettle sequentially and stirring; (2) adding color paste, filler, and an antisetting agent and stirring in a high speed; and (3) finally adding amino resin, adhesion promoter, and residual solvent and uniformly stirring to finish the whole preparation process of the polyester baking varnish. The using method of the prepared polyester baking varnish for the magnesium aluminum alloy base material comprises the following steps of: weighing the polyester baking varnish for the magnesium aluminum alloy base material, stirring uniformly in the weight ratio of the polyester baking varnish to diluents of 1:(0.4-0.6), spraying to the magnesium aluminum alloy base material, placing for 10 to 20 minutes, baking at the temperature of between 150 and 170 DEG C for 20 to 30 minutes, and baking and curing to obtain the polyester baking varnish layer.

The invention discloses a method to produce the hard chrome plating with 30-50 mu m thickness in the trivalence chrome electroplate liquid. The present process has many disadvantages such as the plating thickness can not over 10 mu m and it can not be used to resist polish. The invention is to select the proper additive and control the condition in the base electrolyte containing the chromium chloride to produce the 800Hv hardness chrome plate with smooth surface, also after heating treatment, the hardness can reach above 1400Hv. The chrome plate has no crack and the thickness can reach 50 mu m. The anti-wear character is better than the traditional sexivalent chrome electrical sediment process in the invention. So the plating layer can be used the anti-wear layer of work-piece.

Disclosed is a surface treating agent for a galvanized steel sheet that can provide a surface treated galvanized steel sheet, which has various excellent properties such as excellent corrosion resistance and corrosion resistance after alkali degreasing, particularly has a good balance among corrosion resistance, appearance, and grounding properties in a formed film, and also has well balanced excellent properties regarding anti-dew condensation properties and coatability (coating film adhesion). The surface treating agent for a galvanized steel sheet comprises zirconium ammonium carbonate (A), a compound (B), which contains in one molecule two or more functional groups (a) represented by -SiR1R2R3, in which the molecular weight per functional group (a) (average molecular weight/number of functional groups) is in the range of 100 to 5000, an organic phosphonic acid (C), a metal compound (D) containing at least one metal element selected from the group consisting of Zr, Ti, Co, Fe, V, Ce, Mo, Mn, Mg, Al, Ni, Ca, W, Nb, Cr, and Zn, and water. The surface treating agent has a pH value of 6 to 11.