Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

64 results about "Craquelure" patented technology

Craquelure (French: craquelé, Italian: crettatura) is a fine pattern of dense cracking formed on the surface of materials. It can be a result of drying, aging, intentional patterning, or a combination of all three. The term is most often used to refer to tempera or oil paintings, but it can also develop in old ivory carvings or painted miniatures on an ivory backing. Recently, craquelure has been proposed as a way to authenticate art.

Recombination wood and manufacturing method thereof

The invention provides a method for manufacturing reconstituted wood. Rotary cut is carried out on the raw wood for preparing a veneer or a veneer strip, defibering is carried out on the veneer, the forming points and/or wood bunch shades or wood bunches of striation crack are formed along the natural texture of wood on the veneer, then dipping, drying and hot pressing for molding the reconstituted wood are carried out. Compared with the prior art, the method of the invention solves the problem that wood bunch is irregular; the rate of utilizing wood and production efficiency of wood bunch are improved; defibering process is simplified and energy consumption for defibering is lowered. The process facilitates the cracks on the wood bunch shades and wood bunches to be very even and facilitates the dipping of wood bunch shades or wood bunches to be very even in the following dipping process; the product problems such as warp, deformation, jump fibre, and the like, are overcome, which are aroused by uneven defibering in making wood bunches from raw wood directly in the prior art, and the boards that the surface is very smooth, the mechanical performances such as stiffness and intensity, and the like, are higher than the raw material itself are made, therefore the fast-growing forest wood with worse performances and wider source can be made into the products of reconstituted wood which can compare beauty with noble hardwood.
Owner:INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY

Method for preparing casting titanium and titanium-aluminum base alloy porous ceramic mould shell

Disclosed is a preparation method of a porous ceramic shell of cast titanium and titanium aluminum alloys, relating to the melt mould precise casting field. The invention solves the problem that cracks are caused when the thin-walled titanium and the titanium aluminum alloys castings are solidified and shrunk due to the large residual intensity of the present shell of cast titanium and titanium aluminum alloys. The method is as following: firstly, wax mould pressing; secondly, coating and hanging four surface layers, and the manufacturing processes of each layer are that coating and hanging coatings of the surface layer, sprinkling zirconic sand, drying in the room temperature, and then the next layer is coated and hung; thirdly, coating and hanging two transitional layers, whose differences from coating and hanging the surface layers lie in that each coated and hung transitional layer comprises a high polymer and a back coating of water latex, and bauxite sand of 50 to 70 orders is sprinkled; fourthly, coating and hanging four to eight reinforcing layers, whose differences from hanging and coating the transitional layers lie in that the bauxite sand of 30 to 40 orders is sprinkled; fifthly, coating and hanging the coatings of an outer layer , which will be dried in the room temperature; sixthly, dewaxing by high pressure steam; seventhly, roasting the shell. The invention can be widely applied in the manufacturing of the shell of titanium and titanium aluminum alloys castings for the national defense and domestic use.
Owner:HARBIN INST OF TECH

Manufacturing technology of novel hobbing cutter with laser cladding WC wear-resistant coating

The invention relates to a manufacturing technology of a novel hobbing cutter with a laser cladding WC wear-resistant coating. The manufacturing technology comprises the following steps: (1) manufacturing the hobbing cutter with a forging method, wherein the hobbing cutter is made of alloy steel; (2) carrying out peel removal cleaning treatment on surfaces to be machined of the intertooth space of an alloy cutter; (3) using a transverse flow CO2 laser, taking a numerical control machine tool as a workbench, and carrying out cladding wear-resistant strengthening treatment on the intertooth space of a cutter ring cutter, wherein the thickness of the WC cladding layer is 1.5-2.5mm; (4) carrying out performance detection on a composite coating. A laser surface cladding technology is adopted, and the tissues of a cladding coating mainly consist of carbides and a supersaturated solid solution superfine casting-state structure, wherein spherical tungsten carbide ceramics are of ultra-high hardness and uniformly distributed on a binding phase with extremely high hardness level, and also achieves an inhibition effect on abrasion, and the grinding resistance between hobbing cutter edges can be effectively improved; the binding phase is good in tenacity and high in strength, the formation of cracks can be effectively reduced, and the wear resistance and corrosive resistance of the hobbing cutter is improved, and the service life of the hobbing cutter is prolonged.
Owner:江苏点金激光科技有限公司

Method and apparatus for continuous production of flexible micro-nano metal network transparent conductive film

The invention discloses a method and apparatus for continuous production of a flexible micro-nano metal network transparent conductive film. The method comprises the steps of: continuously conveying a flexible substrate to undergo pre-cleaning, air drying, atmospheric pressure plasma cleaning, cracking liquid coating and heating in order, thus forming a craquelure template on the flexible substrate; placing the flexible substrate in a vacuum chamber and performing vacuum pumping on the vacuum chamber; subjecting the flexible substrate to secondary plasma cleaning, then coating a compact metal film, and filling the craquelures on the craquelure template with a metal film material in the process so as to obtain a flexible micro-nano metal network transparent conductive film semi-finished product; releasing vacuum, taking out the semi-finished product from the vacuum chamber, and removing the craquelure template from the flexible substrate, thus obtaining the product. The method and apparatus provided by the invention realize continuous and large-area production of the flexible micro-nano metal network transparent conductive film. The film coating mode is suitable for industrial automatic continuous magnetron sputtering production lines, can greatly shorten the production cycle, and substantially improves the productivity.
Owner:SOUTH CHINA NORMAL UNIVERSITY +1

Electromagnetic stirring laser cladding repairing method for cracks of ultra-high strength steel undercarriage component

The invention belongs to the technical field of laser material additive manufacturing and repairing, and relates to an electromagnetic stirring laser cladding repairing method for cracks of an ultra-high strength steel undercarriage component. The electromagnetic stirring laser cladding repairing method is mainly used for repairing the surface cracks on the undercarriage component. The electromagnetic stirring laser cladding repairing method comprises the steps that (1) a material used for laser cladding repairing is prepared; (2) surface cleaning is conducted before repairing; (3) electromagnetic stirring assists laser cladding repairing; (4) machining is conducted; (5) nondestructive testing is conducted; and (6) repairing is finished after stress relief annealing is conducted. Accordingto the electromagnetic stirring laser cladding repairing method for the cracks of the ultra-high strength steel undercarriage component, the average tensile strength of direct laser cladding repairing is 1424.3 MPa, the average extension rate is 11.5%, the average impact toughness is 478 KJ/m<2>, and the average microhardness of repaired metal is 464.6 HV; and the average tensile strength of electromagnetic stirring assisted laser cladding repairing is 1466.7 MPa, the average extension rate is 15.1%, the average impact toughness is 665 KJ/m<2>, and the average microhardness of the repaired metal is 491.4 HV. Deformation of the component is controllable after repairing, the repaired part is free of defect, the repair area is better in room-temperature plasticity and impact toughness, and the service life of the undercarriage component is prolonged.
Owner:AVIC BEIJING INST OF AERONAUTICAL MATERIALS

Wood floor surface coating processing method

InactiveCN102641836AClear textureEnhance the sense of naturePretreated surfacesCoatingsWater basedLacquer
The invention provides a wood floor surface coating processing method which comprises the following steps: first layer colored paint is sprayed on a pretreated wood floor, the spraying weight is 140-240 g/m<2>, and then the wood floor is heated and dried, and is also smoothly polished; water-based crackle paint is then sprayed, the spraying weight is 80-150g/m<2>, and then the wood floor is subjected to hot drying at the temperature of 50-150 DEG C to generate cracks; second layer colored paint is sprayed on the wood floor, the spraying weight is 60-110 g/m<2>, and then the wood floor is heated to be dried; subsequently, the surface of the wood floor is polished, so that the second layer colored paint on the convex surface of the wood floor is removed, the color of the first layer colored paint is exposed, and the color of the second layer colored paint is maintained in the inner and concave surfaces of the cracks; and prime paint and wear-resistant finish paint are finally coated on the wood floor and are also dried, so the wood floor finished product is obtained. The surface textures of the wood floor processed by the wood floor surface coating processing method are criss-cross, changeful, well-proportioned and have three-dimensional and artistic aesthetic feeling, and furthermore, the special classical decorative effect is achieved.
Owner:GUANGDONG YIHUA TIMBER IND

Brick inlaying method for fully covered thermal inlaid brick cooling wall

The invention relates to the technical field of blast furnace cooling wall manufacture, in particular to a brick inlaying method for a fully covered thermal inlaid brick cooling wall. The brick inlaying method is characterized in that: inlaid bricks are inlaid into a wooden mould and then a sand mould is made, and the brick inlaying method comprises the specific steps of: 1) pasting fireproof asbestos paper onto the side face and the bottom face of each inlaid brick; 2) placing the inlaid bricks onto the wooden mould, making the inlaid bricks close to one another and putting a movable block into a hollow part at the dovetail-shaped bottom of each inlaid brick; 3) embedding the wooden mould into a sand box and firmly connecting the wooden mould with the sand box; and 4) filling moulding-sand resin sands into the sand box, turning the sand box and taking out the wooden mould after the moulding sands are solidified, and retaining the inlaid bricks in the sand mould. The brick inlaying method has the advantages that: 1) gaps among the inlaid bricks are eliminated, so cracks on the inlaid bricks caused by the entered metal solution can be avoided, and the quality and the qualification rate of the product are improved; and 2) the side face of the exposed part of each inlaid brick cannot be pasted by the metal, so the later processing work is reduced and the production efficiency is improved.
Owner:ANSTEEL HEAVY MACHINERY CO LTD

Method for detecting welding cracks of inclined Y-shaped groove

The invention relates to a method for detecting welding cracks of an inclined Y-shaped groove. The method comprises the following steps: (1) selecting an appropriate welding material; (2) optimizing processing morphology of the groove; (3) performing preweld cleaning; (4) test piece splicing; (5) welding and restraining the weld joint; (6) preheating a testing weld before welding; (7) welding thetesting weld; (8) post-weld treatment; (9) performing weld coloring; and (10) assessment of the crack. The step (2) comprises the following sub-step: preparing samples 1 and 2, wherein the assembly structure of the sample 1 is a wedge surface which is in a longitudinal symmetry manner and mutually presents a tip top, and the assembly structure of the sample 2 is as follows: the two sides are in the shape of a wedge surface which is in a longitudinal symmetry manner and mutually presents a tip top, the middle is a slope extending up and down, the relatively upper wedge surface of the slope wholly sinks in parallel, and the sinking depth is consistent with the standard required post-weld inclined Y root gap. In addition, the method disclosed by the invention directly adopts a coloring snap or bend breaking method, and the surface crack rate, root crack rate and section crack rate can be intuitively measured.
Owner:JIANGYIN XINGCHENG SPECIAL STEEL WORKS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products