66results about How to "Has a strengthening effect" patented technology

The invention relates to the technical field of office furniture connection, in particular to an under-table table top connecting piece provided with installing lugs. The under-table table top connecting piece comprises a first clamping piece, the installing lugs and a second clamping piece; the first clamping piece comprises a first end face, at least two oppositely-arranged first snap joint parts are connected with the first end face, and the first snap joint parts are vertically and oppositely arranged in a plate shape, and the opposite faces or the back faces of the first snap joint partsare provided with transverse clamping ribs; the installing lugs outwards extend to be provided with round holes; the second clamping piece comprises second snap joint parts, and the corresponding faces of the second snap joint parts are provided with protruding clamping tables; and the clamping ribs abut against the clamping tables, and therefore the first clamping piece and the second clamping piece are clamped. According to the under-table table top connecting piece, the first clamping piece and the second clamping piece are clamped, and therefore a rod piece needing to be fixed can be quickly fixed; the installing lugs and table face plates are conveniently connected at the outer sides of the first snap joint parts, two table face plates which are spliced together can be connected, theconnecting piece can be quickly and conveniently demounted, and connection and demounting of the table top and transverse beams are convenient and quick.

The invention discloses a flux-cored wire for aluminum and aluminum welding. The flux-cored wire material comprises the following chemical components in percentage by weight: 0.01 to 20 percent of Si, 0 to 30 percent of Zn, 0 to 5 percent of Ti, 0 to 0.5 percent of Ce, 0.001 to 0.5 percent of P, less than 0.1 percent of other inevitable impurity and the balance of aluminum. The flux-cored wire has the characteristics of good drawing performance, high flowability, high weld strength, high postwelding gas tightness, and no corrosion, and can be widely applied to aluminum and aluminum welding of heat exchangers or radiators in air conditioning, refrigerator, automobile and refrigeration industry.

The invention discloses a pure metal / high-entropy alloy nano-multilayer film with controllable phase transition characteristics and a preparation method thereof. The pure metal target and the high-entropy alloy target are alternately magnetized on the surface of a silicon substrate after the oxide layer is removed. Controlled sputtering to obtain pure metal / high-entropy alloy nano-multilayer film; the pure metal target is Cu target, and the high-entropy alloy target is Fe 50 mn 30 co 10 Cr 10 target or Fe 50 mn 30 co 10 Ni 10 target; during magnetron sputtering, both the Cu target and the high-entropy alloy target use a DC power supply, the power is 200W, and the deposition pressure is 0.8-1.3Pa; the pure metal / high-entropy alloy nano-multilayer film is Cu / Fe 50 mn 30 co 10 Cr 10 or Cu / Fe 50 mn 30 co 10 Ni 10 nanometer multilayer film. The invention realizes the preparation of the metal / high-entropy alloy nano-multilayer thin film with adjustable phase transition.