157 results about "Galling" patented technology

An orthopedic assembly including a plate and a locking screw that interlocks with the plate to secure the plate to a bone while the bone heals. To minimize galling or cold welding within an engagement region of the orthopedic assembly, an anodized coating, such as a Type II anodized coating, may be applied to both engaging surfaces of the engagement region. To avoid having to mask portions of the plate and the locking screw outside of the engagement region during the coating process, the anodized coating may be applied to the entire plate and the entire locking screw.

The present invention is directed to improving the cutting efficiency and reducing the manufacturing costs associated with endoscopic cutting instruments by eliminating the distal bearing surfaces or providing means for making the contact at the distal bearing intermittent so that surfaces do no undergo high localized heat and galling. In one embodiment, this goal is achieved by modifying or removing the axial constraints on the inner sliding member that are characteristic of conventional endoscopic shavers. In another embodiment, the improved cutting efficiency and reduced manufacturing cost is achieved by eliminating a closed end characteristic of conventional endoscopic shavers (e.g., removing the closed end of either the inner sliding member or the outer sliding member to thereby eliminate the associated bearing surface formed therebetween).

The invention discloses a laser cladding repairing method of a piston rod. The process is realized by the following steps: removing a 0.5-2mm body metal fatigue layer on the working surface of the piston rod by utilizing a lathe; clamping a workpiece; rotating the workpiece in the linear velocity of 400-700mm/min; cleaning grease stains and impurities on the surface by acetone; heating the workpiece to 40-100 DEG C; laser cladding a layer of stainless steel to be used as an antiwear anticorrosion surface layer in 3.5KW power and 3mm bandwidth; and finally mechanically processing the laser cladding layer to achieve the use size specification of the piston rod. The laser cladding repairing method has the advantages of not only realizing the repairing of the old hydrocylinder piston rod, reducing the rejection rate of spare parts and saving the production cost, but also leading the repaired hydrocylinder piston rod to have longer service life and balancer operation performance, and avoiding the use problems that the galling appears on the working surface of the piston rod caused by the reason that the cooling lubricating oil is insufficient or foreign matters enter the cylinder, and hydraulic oil leaks, and the like.

A tubular member 12 having an internal and/or external metal thread 18, 20 at one end thereof, at least part of the thread 18, 20 being coated with an alloy of copper and tin, said alloy containing 5 wt % to 95 wt % copper. The tubular member 10 can be combined with another tubular member 14, 16 to provide a threaded connection 10 having improved galling resistance.

A sector is provided with a plurality of pieces divided in a tire circumferential direction, a back segment supporting a plurality of pieces, and an elastic body interposed between end surfaces in the tire circumferential direction of the pieces. In an unheated state before curing, since clearances C1 to C3 are provided between the piece and the back segment, and the piece is slidable in the tire circumferential direction, it is possible to suitably adjust a gap between the pieces to a uniform state without any deviation. Further, in a heated state at a time of curing, since the clearances C1 to C3 are reduced by a thermal expansion of the piece, and the piece is fixed to the back segment, the piece does not slide in the tire circumferential direction, and it is possible to prevent an attrition and a galling of the piece from being generated early.

The invention discloses a plastering, galling and automatic mortar-spraying machine, which comprises a pedestal plate and a base plate located below the pedestal plate, a hydraulic oil tank and a plurality of hydraulic jacking devices located at the four corners of the base plate are fixedly mounted between the pedestal plate and the base plate, the pedestal plate and the base plate are connectedthrough the multiple hydraulic jacking devices, the multiple hydraulic jacking devices all communicate with the hydraulic oil tank through oil guiding pipes correspondingly, horizontal displacement mechanisms are symmetrically mounted on the side faces of the base plate and communicate with the hydraulic oil tank through oil guiding pipes, and idler wheels are mounted at the four corners of the lower end of the base plate. The plastering, galling and automatic mortar-spraying machine has the three functions of plastering, galling and mortar spraying and has the advantages of high mortar-outletefficiency and horizontal moving plastering, and the problem that the high wall surface cannot be painted is solved.

An anti-galling coating for a threaded joint of an oil casing. The mass percentages of the components of the coating are: organic binder 30-60 wt%, solid lubricant 30-60 wt%, anticorrosive agent 6-15 wt%, leveling agent 0.01-0.1 wt%, wetting agent 0.01-0.1 wt% and mixed solvent in addition. The organic binder is polyamide-imide liquid resin with a solid content of 38-42 wt%. The solid lubricant is any one of molybdenum disulphide and tungsten disulfide, or a combination of molybdenum disulfide or tungsten disulfide and polytetrafluoroethylene. Preferably the solid lubricant and the anticorrosive agent are surface modified with silane coupling agent. The anti-galling coating is obtained by spraying the coating on the surface of an oil casing joint processed with phosphate, and the environmental pollution caused by heavy metal powder in thread compounds is avoided.

The invention discloses a flying shear type high-speed wire cutting device, which consists of an auxiliary wire feeding mechanism, a high-speed wire cutting mechanism, a baiting machine and a storage tank, wherein the high-speed wire cutting mechanism comprises a wire feeder, a straightening machine and a fly-cutter shearer; the wire feeder consists of wire feeding wheels with the same rotating speed and opposite directions; the straightening machine consists of a rotating hub and a belt transmission mechanism, and a hole die is arranged in the rotating hub; and the fly-cutter shearer consists of an upper cutter head and a lower cutter head with the same rotating speed and opposite directions, and cut-off blades are arranged in cutter head grooves. The flying shear type high-speed wire cutting device has the advantages that: the operation is simple, the adjustment for the straightening machine is simple and easy, and the cut-off size of the fed wire does not need to be adjusted; the product has high quality, has no quality defects such as short head free, double cutters, surface galling and the like, and has high yield; the detachment is quick and the maintenance is convenient, so the maintenance downtime is reduced; the automation degree is high, and the processes of removing oxide skins from wire rods, drawing steel wires and straightening and cutting off the steel wires are finished once, so the labor production efficiency is improved; and the working condition is improved, and the noise is reduced.

The invention relates to a wool-like knitted fabric and a production method thereof. The fabric is made of blended yarns of double-resistant superfine acrylic fiber and cotton and is in cotton-wool weave. The production method includes: 1, subjecting the blended yarns of double-resistant superfine acrylic fiber and cotton to cotton-cool weaving by a double circular knitting machine with 20-28G stitch length so as to obtain a blank; 2, subjecting the blank to after-finishes, such as pre-finishing, acrylic fiber dyeing, soaping, cotton dyeing, after-finishing, drying, galling, shearing, flat setting, and reeling. The advantages in the acrylic fiber and cotton are combined, the performances are complemented, and the wool-like fabric is developed; the acrylic fiber and cotton are cheap, the problem that the commercially available wool is expensive is solved, and the fabric has a great competitive advantage in the market; the production process is simple and low in cost and has promising market prospect.

A frame pool is disclosed including a frame assembly and a pool liner, the frame assembly including horizontal frame members and a vertical frame member coupled together via a T-shaped joint. The T-shaped joint may be constructed of plastic to facilitate attachment and detachment to the adjacent frame members and to resist galling and corrosion. The T-shaped joint may also be relatively small to improve the appearance and water containment of the frame pool.

The invention provides a galling and dust blowing and sucking device for a coating of the inner wall of a pipeline. The device comprises a main pipe body, a walking mechanism, a galling device, a dustblowing pipe, a dust sucking pipe, a cleaning device and a main controller. The walking mechanism drives the galling device, the dust blowing pipe and the dust sucking pipe to move on the inner wallof the pipeline along the axis, a main rotary motor drives the galling device, the dust blowing pipe and the dust sucking pipe to move on the inner wall of the pipeline along the circumference, the inner wall of the pipeline is stably galled through the galling device, intense blowing airflow is generated by the dust blowing pipe, abrasive dust left after galling is completed is blown up, the abrasive dust is sucked through the dust sucking pipe, cleaning liquid is sprayed on cotton cloth a wiping cloth single unit through a liquid sprayer, the cotton cloth makes contact with the inner wall ofthe pipeline for wiping, the abrasive dust left after galling is completed is effectively removed, the cleanliness of a grinding surface is greatly improved, the surface with the uniform and stable roughness is obtained on the inner wall of the pipeline, adhesive force between two coatings is improved, the spraying effect is improved, and the corrosion resistance of the inner wall of the pipelineis improved.

The invention discloses a kind of car board surface galling flaw induction equipment which includes the cavity die section and the male die section and the cavity section includes a top bottom board, a cavity, a cavity bearer supporting bracket and the male die section includes the down bottom board, male die, back guide block, pressure side board, active top bar, and the male die fixes on the down bottom board and corresponds with the cavity backup plate of the cavity die section and the active top bar lays on the down bottom board and lays at the two sides of the sale die and the back guide block fixes on the down bottom board and lays at the two sides of the top bar and the pressure side board lays on the top bar. When the nickelclad lays on the induction equipment on the pressure board and the cavity die moves downstream driving by the pressure machine and at the time of the cavity tie contacting the nickelclad the pressure side board moves downstream with the cavity die and forms the bonding knob on the surface of cavity die and pressure side board surface and during the process of press the bonding knob may fish tail the surface of the nickelclad generating the galling flaw and with the increasing of pressure times the degree of the galling becomes more and more seriously and it provides the technology support for the evaluation system of the galling flaw.

The invention discloses an improved structure of a thermal insulation textile. The surface layer of the textile is a cotton weaving layer; the inner layer of the textile is a galling-trimmed super-fine denier terylene stretch yarn layer (fibers, the fiber number of which is below 0.55dtex, are super-fine denier yarns in industry, wherein dtex is decitex and refers to the gram of a fiber bundle which is 10000 meters long); the middle layer of the textile is a yarn layer with elastic traction; the fabric structures of the surface layer and the inner layer of the textile are plain knitting structures; the surface layer and the inner layer of the textile are weaved together through the middle layer of the textile; the surfaces of the surface layer and the inner layer of the textile are provided with a plurality of convex longitudinal strips at intervals under the elastic traction action of the terylene cladding yarns of the middle layer of the textile, thereby forming a thicker air layer; and moreover, the open air layer of the inner layer is formed after the galling trimming is carried out on the super-fine denier terylene stretch yarn of the inner layer of the textile, thereby greatly improving the thermal insulation rate.

A hand operated file is provided with a thin ceramic coating of a transition metal nitride, such as vanadium nitride and/or zirconium nitride, on its teeth. The coating may be 20 um or less, thereby not altering the macro dimensions of the file. The coating may be applied using a vapor deposition process such as physical vapor deposition, and advantageously via a physical vapor deposition process where the file body does not exceed a temperature of about 300° F. The coating helps prevent galling, thereby increasing the useful life of the file.

The invention relates to the technical field of oil sleeve joint surface treatment, and discloses an anti-galling coating for an oil sleeve joint. The coating is a composition, and comprises the following components in percentage by weight: 5 to 20 percent of polyphenylene sulfide, 10 to 40 percent of polytetrafluoroethylene, 2 to 15 percent of molybdenum disulfide, 1 to 10 percent of polyvinylpyrrolidone, 1 to 10 percent of octyl phenyl polyoxyethylene ether, and the balance of water, wherein the polyphenylene sulfide, the polytetrafluoroethylene, the molybdenum disulfide and the polyvinylpyrrolidone are powdery particles with the particle size of 0.01-5mu m; and the octyl phenyl polyoxyethylene ether is liquid. By the anti-galling coating and the coating method thereof, the bonding strength and anti-galling property of the coating can be convenient to control, and the coating process is simple, easy to operate and suitable industrial implementation.

The invention discloses an aerated brick wall plastering construction method. The method comprises the following steps that firstly, a wall is cleaned, crack filling is performed, and then, after the wall is showered and moistened by watering, slurry throwing and galling are performed on the wall; next, a steel wire mesh is hung at a junction part between an aerated brick and a concrete wall; then, fine cement mortar is uniformly sprayed and coated on the wall, and primary scraping and leveling is performed; before the primary solidification of the mortar of the first plastering, gridding cloth is fully hung on the whole wall; after the first plastering mortar is finally solidified, the wall is subjected to second plastering guniting; meanwhile, the wall is subjected to cleaning and polishing treatment; and finally, the wall maintenance is performed. The construction method has the advantages that the aerated brick wall is subjected to plastering construction, so that the perpendicularity and the flatness of the wall can be guaranteed; the gridding cloth is arranged between a plastering surface layer and a bottom layer, so that the tensile strength and the deformation resistance of the wall are greatly improved; the aerated brick wall can be effectively prevented from generating plastering cracks; and the construction quality of the plastering wall is improved.

The invention discloses an aluminum-magnesium carbon sliding plate brick for converter slag stopping and a production method thereof. The aluminum-magnesium carbon sliding plate brick is produced from the following components in percentage by weight: 60-70% of corundum, 20-28% of magnesia powder, 2-7% of a carbon material, 2-5% of an anti-oxidant, and 3-5% of an organic binding agent. The method comprises: pre-mixing; feeding and mixed milling; press molding; baking for curing; polishing green faces, metal hooping and solid lubricant coating on work surfaces; and thermal insulation and drying. The invention has the advantages that the corundum with high hardness ensures the abrasion strength of the sliding plate surface and avoids the problem of steel drilling galling caused by the low strength of the surface; the corundum aggregate reduces the thermal expansion coefficient of materials and the thermal shock resistance is also significantly better than that of the magnesium carbon sliding, basically the same with that of aluminum carbon; and a fine powder part use a magnesium carbon material, so that the material has more excellent erosion resistance, is small in hole broadening after using, and longer in service life compared with aluminum carbon or aluminum zirconium carbon materials.