30results about How to "Reduced propensity to form" patented technology

The invention relates to a door, in particular for a refrigerator and / or freezer, comprising a door frame (1) having a polymeric door frame profile (2), and at least two transparent panes (3, 4, 5) which are arranged spaced apart from each other and in parallel to the plane of the door frame and form together with the door frame profile (2) at least one planar hollow space (7, 8) filled with gas (6), the discs (3, 4, 5) being made of a polymeric material.

A rolling bearing includes: an outer ring, an inner ring, and rolling elements rolling on the raceways of the outer ring and the inner ring, wherein the surfaces of the inner ring and / or the raceways of the outer ring and / or the rolling elements have a polished layer, and the inner ring and / or the outer ring and / or the rolling elements are made of a steel that has a hardness of at least 58 HRC at least under the polishing layer and has: - at least 0.03 - 0.8% in the edge layer Nitrogen content, where the nitrogen is at least partially dissolved, - at least in the edge layer, a carbon content of 0.1-1.2%, a nickel content of ≤0.4%, a silicon content of 0.2-1.0%, a chromium content of ≥1.0% , ‑≤0.008% sulfur content, ‑≤15ppm oxygen content, ‑≤50ppm titanium content.

A TC4 titanium alloy flux-cored welding wire and a preparation method thereof. The invention belongs to the technical field of welding material preparation. The purpose of the present invention is to solve the problem that most of the existing welding wires for titanium alloy welding are solid welding wires, but the preparation process of solid welding wires is complicated, the cost of formula adjustment is high, and the deposition efficiency of the obtained welding wires in the welding process is low and the moistening effect is low. Technical problems of wetness and poor spreadability. The flux-cored welding wire is prepared from a TA1 titanium alloy sheath and a flux core; the TA1 titanium alloy sheath is made of a TA1 titanium strip through reeling, drawing, and annealing; the flux core is made of vanadium powder, aluminum powder, molybdenum powder, Cobalt powder, nickel powder, copper powder, silicon powder and titanium powder are mixed. Preparation method: first clean the TA1 titanium strip, ball mill the core powder, then reel the TA1 titanium strip, fill it with the core powder, roll and reduce the diameter, and then conduct cold drawing to reduce the diameter of the drawing die to obtain the flux cored welding wire. The flux-cored welding wire of the invention can be used for TC4 titanium alloy welding, has good comprehensive mechanical properties, low content of diffused hydrogen in deposited metal, and high welding efficiency.

The invention provides alloy powder for gray pig iron laser cladding repair and a preparation method of the alloy powder. The alloy powder comprises the chemical components, by weight, 12% to 24% of Cu, 1.5% to 3.5% of C, 0.2% to 2.4% of Si, 0.01% to 0.05% of Al, 0.005% to 0.01% of Ba, 0.001% to 0.01% of Ca, 0.5% to 1.2% of Co, 0.0% to 0.04 % of Y2O3, 0.0% to 0.03% of La2O3, 0.0% to 0.04% of Ce and the balance Ni. According to the alloy powder, because alloy matrix strengthening elements, graphitizing-promoting elements and grain refinement grain boundary strengthening elements are added, and the percentages of the elements are adjusted, alloy acquires the excellent comprehensive performance, the alloy has both the appropriate hardness and the appropriate strength, the possibility of white cast tissue forming is reduced, shock resistance and fatigue resistance are improved, the crack resistance, the formability, the process stability and the component uniformity of the alloy powder in a laser cladding layer are improved, and an effective method convenient to use is provided for successive repair of gray pig iron parts.

The invention relates to a door, in particular for a refrigerator and / or freezer, having a door frame (1) and at least two transparent panels (3, 4, 5), said door frame having polymeric door frame profile (2), the plates are arranged at a distance from one another parallel to the door frame plane and form here together with the door frame profile (2) at least one flat cavity filled with gas (6) (7, 8), wherein the plates (3, 4, 5) consist of a polymeric material.

The invention provides polyether type total-synthesis compressor oil composite which is prepared from the following ingredients in weight percentage: 60%to 85% of polyether, 5% to 30%of alkyl aromatics, 0.5% to 8% of antioxidant, 0.01% to 1% of sulfur-containing or phosphorus-containing extreme-pressure anti-wear agent, 0.01% to 1% of antirust agent, 0.001% to 0.5%of metal passivating agent and 0.001% to 0.1% of demulsifying agent. The invention further provides a preparation method of the polyether type total-synthesis compressor oil composition. The polyether type total-synthesis compressor oil composition has excellent oxidation stability and thermal stability, also has excellent detergency and dispersibility, low carbon deposite and oil sludge formation inclination and excellent hydrolysis stability and demulsibility and is especially suitable for lubricating high-temperature and high-pressure worm air compressors.