Abstract: The disclosure provides a powder sherardizing agent, anti-corrosion metal part and sherardizing method. The powder sherardizing agent in parts by mass includes 20-100 parts of a metal powder, 40-80 parts of a dispersing agent, 0.2-5 parts of decomposing agent. The metal powder includes 60-97 parts of zinc powder and 3-40 parts of magnesium powder. The powder sherardizing agent provided by this disclosure can realize the infiltration of magnesium during the sherardizing process. Zinc and magnesium can form a zinc-magnesium alloy phase with high corrosion resistance, thereby greatly improving the corrosion resistance of the infiltration layer. The sherardizing method provided by this disclosure has the advantages of simple operation, convenient use, low cost, high economic benefit, and wide application range.

Abstract: A rotatable joint to carry high-pressure and low-pressure liquids to a workstation can include a housing, two connecting heads, a first connecting member, a second connecting member, and a rotation member. The housing defines a first connecting hole positioned along a center housing axis and a second connecting member spaced from the first connecting member and parallel to the housing axis. The first connecting member, the second connecting member, and the rotation member can be installed in the housing in that order. One connecting head communicates with the first connecting member, the second connecting member, and the rotation member in that order via the first connecting hole, and the other connecting head communicates with the first connecting member, the second connecting member, and the rotation member in that order, via the second connecting hole.

Abstract: A light intensity adjustable ultraviolet device for curing an optical fiber coating includes a cylindrical mounting base; a UVLED light source module mounted along a peripheral direction and an axial direction in an inner cavity of the cylindrical mounting base; a cylindrical focusing lens configured in front of a light emitting surface of the UVLED light source module, so that ultraviolet light emitted by the UVLED light source module is focused on a curing axis; and an ultraviolet sensor mounted in the inner cavity of the cylindrical mounting base, wherein the ultraviolet sensor is connected to a UVLED power supply control module via an ultraviolet intensity signal processing module; the UVLED power supply control module is connected to the UVLED light source module, so that an optical fiber drawing speed and an ultraviolet intensity form a control closed loop.

Abstract: A light intensity adjustable ultraviolet device for curing an optical fiber coating includes a cylindrical mounting base; a UVLED light source module mounted along a peripheral direction and an axial direction in an inner cavity of the cylindrical mounting base; a cylindrical focusing lens configured in front of a light emitting surface of the UVLED light source module, so that ultraviolet light emitted by the UVLED light source module is focused on a curing axis; and an ultraviolet sensor mounted in the inner cavity of the cylindrical mounting base, wherein the ultraviolet sensor is connected to a UVLED power supply control module via an ultraviolet intensity signal processing module; the UVLED power supply control module is connected to the UVLED light source module, so that an optical fiber drawing speed and an ultraviolet intensity form a control closed loop.

Abstract: A rotatable joint to carry high-pressure and low-pressure liquids to a workstation can include a housing, two connecting heads, a first connecting member, a second connecting member, and a rotation member. The housing defines a first connecting hole positioned along a center housing axis and a second connecting member spaced from the first connecting member and parallel to the housing axis axis. The first connecting member, the second connecting member, and the rotation member can be installed in the housing in that order. One connecting head communicates with the first connecting member, the second connecting member, and the rotation member in that order via the first connecting hole, and the other connecting head communicates with the first connecting member, the second connecting member, and the rotation member in that order, via the second connecting hole.

Abstract: An axial variable capacity rotary pump which yields a stepless change of capacity. The pump has a casing with an inlet and outlet, at least one rotary member with engaging elements mounted on the periphery of the rotary member for engaging a mating member, and a pair of axial sealing element which seal either axial side of the rotary member. One sealing element moves together with the rotary member axially to change a length of a sealed working chamber between the members, thereby changing the delivery capacity per revolution of the pump.