7 results about "Galling" patented technology

This invention relates to the field of petroleum engineering equipment and advanced materials processing technology, specifically to an anti-galling toothed connection structure suitable for titanium alloy oil casing, comprising interlocking female and male threads. Through parametric design of tooth width and groove dimensions, female and male thread angles and tooth heights, the galling phenomenon caused by high temperature and friction during processing is reduced, the risk of stress concentration is lowered, sealing and connection reliability are improved, thread engagement accuracy is guaranteed, and combined with surface treatment processes, the overall sealing and connection strength is enhanced. It is suitable for extreme environments such as deep wells, ultra-deep wells and offshore oil and gas extraction.

The invention provides laminated slab machining equipment, and belongs to the technical field of building material production, the laminated slab machining equipment comprises an equipment base and an equipment rack fixed on the equipment base, and further comprises an adjustable mold mechanism, the outer side of the adjustable mold mechanism is in sliding fit with a guide column, and the lower end of the guide column is fixed on the equipment base; the vibration excitation mechanism is used for driving the adjustable mold mechanism to slowly ascend and then quickly fall by virtue of self gravity, so that the concrete poured in the adjustable mold mechanism is compacted by vibration; and the pressurizing and galling mechanism is installed on the equipment rack through a sealing telescopic cylinder, and the pressurizing and galling mechanism is used for conducting sealing and pressurizing on the adjustable mold mechanism and conducting controllable galling operation on concrete in the adjustable mold mechanism. Through the synergistic effect of gravity impact type vibration compaction and sealing pressurization controllable galling, the compactness and the surface roughness of the laminated slab concrete and the bonding performance of the laminated slab concrete and a post-pouring layer are remarkably improved, and therefore the strength and the durability of components and the reliability of the overall structure are guaranteed.

A chromium-bearing, cobalt-based alloys amenable to wrought processing has improved resistance to both chloride-induced crevice corrosion and galling. The alloy contains up to 3.545 wt. % nickel, 0.242 to 0.298 wt. % nitrogen, and may contain 22.0 to 30.0 wt. % chromium, 3.0 to 10.0 wt. % molybdenum, up to 5.0 wt. % tungsten, up to 7 wt. % iron, 0.5 to 2.0 wt. % manganese, 0.5 to 2.0 wt. % silicon, 0.02 to 0.11 wt. % carbon, 0.005 to 0.205 wt. % aluminum, and the balance is cobalt plus impurities.

Provided is a substrate processing method and a substrate processing apparatus capable of suppressing uneven processing of a substrate, suppressing galling of a substrate and a gripping portion that grips the substrate, and suppressing generation of particles resulting from the galling. The substrate processing apparatus includes a holding portion that holds a substrate horizontally, a rotating portion that rotates the holding portion, and a control portion. The holding portion includes a rotating disk that is rotatable by the rotating portion, a first gripping portion that is rotatable with the rotating disk and is movable between a gripping position that grips a peripheral edge of the substrate and a releasing position that releases the substrate, and a second gripping portion that is rotatable with the rotating disk and is movable independently of the first gripping portion between the gripping position and the releasing position. The control portion alternately grips the peripheral edge of the substrate with the first gripping portion and the second gripping portion during rotation of the holding portion by the rotating portion and supply of a liquid to the substrate held by the holding portion.

The utility model discloses a concrete pavement galling and groove-pressing dual-purpose tool, which comprises a traction assembly, a galling assembly and a groove-pressing assembly, the traction assembly is connected with the galling assembly and is used for driving the galling assembly to carry out galling construction on a concrete pavement so as to form rough textures to carry out galling construction on the concrete pavement, and the groove-pressing assembly is connected with the traction assembly. The groove pressing assembly is detachably installed below the galling assembly and used for conducting groove pressing construction on the concrete pavement to form a groove. According to the galling and groove pressing dual-purpose tool, the galling and groove pressing functions of a concrete pavement are integrated on one tool, function conversion is achieved through the detachable groove pressing assembly, the types and the number of construction equipment are reduced, the input cost and the management difficulty of the construction equipment are reduced, and the tool is easy and convenient to operate and high in practicability. A constructor can easily control the moving direction and speed of the galling assembly and the groove pressing assembly, different construction environments and construction requirements are met, and the tool is flexible to use and suitable for construction of pavements with various widths.

The utility model relates to a prefabricated truss composite floor slab galling device for a prefabricated building, which comprises a door-shaped frame which can be arranged in a crossing manner along the short edge direction of a prefabricated table, moving components which can linearly walk are symmetrically arranged at the two bottom ends of the door-shaped frame respectively, and rectangular guide holes are vertically formed in the upper parts of the two side surfaces of the door-shaped frame in a penetrating manner; a guide plate is arranged in a horizontal gap between the two guide holes in a penetrating mode, and the two ends of the guide plate are connected with suspension supporting assemblies suspended at the tops of the corresponding guide holes in a lifting and hanging mode respectively. A rail hole is formed in the guide plate in a penetrating mode along the center line of the guide plate, a galling mechanism is transversely arranged in the rail hole in a sliding and suspending mode, and the galling mechanism is pulled to move left and right through pulling assemblies symmetrically arranged on the top face of the end of the guide plate. According to the utility model, depth difference caused by non-uniform manual force application can be avoided, linear distortion caused by manual operation is eliminated, and the width consistency of grooves is ensured; operators can complete equipment control without standing on the edge of the prefabricating table, and the hidden danger that the operators fall down is fundamentally avoided.

The invention provides a substrate processing method and a substrate processing apparatus capable of suppressing uneven processing of a substrate, suppressing abrasion between the substrate and a gripping part for gripping the substrate, and suppressing generation of particles caused by abrasion. The substrate processing apparatus includes: a holding portion for horizontally holding a substrate; a rotating part for rotating the holding part; and a control unit. The holding portion includes: a rotating disk that can be rotated by the rotating portion; a first grasping part which can rotate together with the rotating disk and can move between a grasping position for grasping the periphery of the substrate and a releasing position for releasing the substrate; and a second gripping part which can rotate together with the rotating disk and can move between a gripping position and a releasing position independently of the first gripping part. The control unit is capable of alternately gripping the peripheral edge of the substrate by the first gripping unit and the second gripping unit while the holding unit is rotated by the rotating unit and the liquid is supplied to the substrate held by the holding unit.