86results about How to "Uniform and stable tissue" patented technology

The invention provides a high-strain steel plate for high-homogeneity L485 marine line pipe and its manufacturing method. The composition of the steel plate is as follows by weight percentage: C 0.02%-0.08%, Si 0.10%-0.40%, Mn 1.40%-1.80% , Nb 0.02%~0.08%, V 0.01%~0.05%, Ti 0.01%~0.04%, Al 0.025%~0.045%, P≤0.010%, S≤0.005%, Cu 0.10%~0.50%, Mo 0.02~0.40 %, Cr 0.06% to 0.45%, Ni 0.10% to 0.50%, and the rest are Fe and unavoidable impurity elements. The manufacturing method includes molten steel smelting → out-of-furnace refining → casting → slab reheating → controlled rolling → controlled cooling → heat treatment → air cooling to room temperature; the application of the invention realizes the L485 high-homogeneity steel plate for marine pipes with excellent low-temperature toughness and high strain performance cost-effective production.

The invention relates to a high-performance TC11 tube and a preparation thereof. According to the preparation method, the finished product TC11 tube is prepared by firstly preparing a TC11 titanium alloy cast ingot from a first-class titanium sponge, an aluminum-vanadium alloy, an aluminum-zirconium alloy and scrap zirconium by virtue of strict control of materials and the melting process, forging the cast ingot to obtain a black-rust sheared billet, then machining and carrying out surface grinding to obtain a extruded ingot billet, drilling the ingot billet, sheathing, heating and extruding to obtain a tube billet, then carrying out hot straightening, surface treatment and heat treatment and finally machining, such as boring and turning to obtain the finished product TC11 tube. The TC11 titanium alloy tube prepared by the preparation method disclosed by the invention has the characteristics that (1) the TC11 titanium alloy tube has very high strength, ductility and impact properties; (2) the tube having relatively high tolerance level can be obtained; (3) the microstructure of the TC11 titanium alloy tube is uniform and stable; and (4) the TC11 titanium alloy tube has excellent corrosion performance. The TC11 titanium alloy tube can meet the high-standard application requirement in the petroleum industry.

The invention relates to a non-magnetic planet shaft and a machining process thereof. The non-magnetic planet shaft is made of a stainless steel 0Cr18Ni9 material. The machining process of the non-magnetic planet shaft includes feeding, solution treatment, surface oxalate treatment, spline extruding and heading, machining, inclined spline rolling, straightening, grinding, nitrocarburizing and deoiling washing. The planet shaft manufactured through the process is table and even in organization, not easy to magnetize even in long-time use, flexible in sliding and capable of meeting the requirement for bending strength.