40results about How to "Reduced susceptibility to stress corrosion cracking" patented technology

The invention discloses aluminum alloy for an anti-chloridion-corrosion type aluminum alloy oil pipe and a pipe manufacturing method of the aluminum alloy. The aluminum alloy comprises, by weight, 6.90%-7.49% of Zn, 2.10%-2.30% of Mg, 0.05%-0.10% of Cu, 0.10%-0.30% of Mn, 0.10%-0.30% of Cr, 0.01%-0.02% of Ti, 0.15%-0.2% of Zr, 0.05%-0.1% of Sc, and the balance Al and inevitable impurities. The strength performance of the aluminum alloy is improved significantly through matching of the high-content Zn and the low-content Mg. The strength and the repeated loading resistance of the aluminum alloy are improved through the appropriate-content Mn and the appropriate-content Cr, and the good plasticity and toughness of the aluminum alloy are ensured. The micro-content Ti, the micro-content Zr and the micro-content Sc serve as supplement and improvement. The structure stability and the performance reliability of the aluminum alloy are ensured through grain refinement and precipitation strengthening. The aluminum alloy for the anti-chloridion-corrosion type aluminum alloy oil pipe is high in overall specific strength, good in corrosion resistance, low in cost, good in processability and high in qualified product ratio.

The invention discloses a preparation method of an aluminum alloy sectional material for producing a solar energy frame, and relates to the field of aluminum alloys. The problem of poor quality of theproduct surface in the process of producing solar energy frame parts by using the aluminum sectional material is solved. According to the technical key point, the preparation method of the aluminum alloy sectional material for producing the solar energy frame comprises the following steps that smelting is carried out, specifically, an aluminum silicon intermediate alloy, an aluminum iron intermediate alloy, an aluminum copper intermediate alloy, an aluminum manganese intermediate alloy, an aluminum magnesium intermediate alloy, an aluminum chromium intermediate alloy, an aluminum zinc intermediate alloy and an aluminum titanium intermediate alloy are extracted and charged in a furnace for smelting according to proportional ingredients of components, then a magnesium ingot is added into the furnace according to component proportion, stirring is carried out, continuous smelting is carried out, and then slagging off is carried out; refining is carried out, specifically, the furnace temperature is adjusted to the refining temperature, and slagging off is carried out; casting is carried out, specifically, on-line wire feeding refining is carried out by adopting an aluminum titanium boron wire to obtain a casting bar; extrusion is carried out, specifically, the aluminum casting bar is heated and a mould is extruded, extrusion is carried out, and the aluminum alloy sectional materialis obtained; and cutting is carried out, specifically, the aluminum alloy sectional material is cut into segments according to a certain length, and the purpose of improving the yield and surface quality of the aluminum alloy sectional material is achieved.

The invention relates to an aluminum alloy wire suitable for overhead transmission lines, belonging to the technical field of aluminum alloy wires, which is made of the following components in mass percentage: Mg2.0~3.2%; Si3.5~4.5%; Mn0.2 ~0.3%; Cr: 0.1~0.2%; Zr0.18~0.25%; Ti0.35~0.40%; Yb0.15~0.3%; the balance is Al and impurities with content ≤0.05%. The invention provides an aluminum alloy wire, which can improve the strength and corrosion resistance of the aluminum alloy wire while enhancing the conductivity of the aluminum alloy wire, so as to meet the needs of harsh environments.

The invention discloses Al-Fe-Mg-Cr aluminum alloy for a coal mine cable and an aluminum alloy cable. Aluminum alloy materials comprise, by weight, 0.2% to 1.1% of Fe, 0.01% to 0.4% of Mg, 0.001% to 0.2% of Cr, 0% to 0.1% of Si, 0% to 0.2% of B, and the balance of Al and impurities. The aluminum alloy materials are processed through the smelting technology, the casting technology and the rolling technology so that an aluminum alloy rod can be obtained, then, the aluminum alloy rod is drawn, bunched into strands and softened so that an aluminum alloy cable core can be obtained, and next, the conductor cable core is subjected to extruded insulation, cabling and extruded jacketing or armoring so that the aluminum alloy cable can be made. The Al-Fe-Mg-Cr aluminum alloy for the coal mine cable has the advantages of being high in strength and electric conductivity, good in bending property and the like. The aluminum alloy cable made from the aluminum alloy can meet the requirements for the performance of the cable in the coal mine field.

The invention discloses a high-strength graphene and rare-earth aluminium alloy. The grapheme and rare-earth aluminium alloy comprises an aluminium alloy matrix and graphene. The composition of the aluminium alloy matrix comprises, by mass, 1.2-1.8% of Cu, 0.18-0.25% of Si, 0.08-0.2% of Cr, 0.6-0.8% of Mg, 0.1-0.2% of Mn, 0.3-0.4% of Fe, 0.3-0.5% of Zn, 0.02-0.06% of Ti, 0.1-0.2% of V, 0.1-0.2% of Ni, 0.04-0.07% of Mo, 0.05-0.12% of Zr, 0.04-0.08% of Nd, 0.04-0.06% of La, 0.03-0.05% of Ce, and the balance Al. The high-strength graphene and rare-earth aluminium alloy has good mechanical properties such as strength, toughness and the like.

The invention discloses Al-Fe-Cu aluminum alloy for a coal mine cable and an aluminum alloy cable. Aluminum alloy materials comprise, by weight, 0.2% to 1.1% of Fe, 0.01% to 0.4% of Cu, 0% to 0.1% of Si, 0% to 0.2% of B, 0.001% to 0.3% of trace elements, and the balance of Al and impurities. The aluminum alloy materials are processed through the smelting technology, the casting technology and the rolling technology so that an aluminum alloy rod can be obtained, then, the aluminum alloy rod is drawn, bunched into strands and softened so that an aluminum alloy cable core can be obtained, and next, the conductor cable core is subjected to extruded insulation, cabling and extruded jacketing or armoring so that the aluminum alloy cable can be made. The Al-Fe-Cu aluminum alloy for the coal mine cable has the advantages of being high in strength and electric conductivity, good in bending property and the like. The aluminum alloy cable made from the aluminum alloy can meet the requirements for the performance of the cable in the coal mine field.

The invention discloses Al-Fe-Mg aluminum alloy for a coal mine cable and an aluminum alloy cable. Aluminum alloy materials comprise, by weight, 0.2% to 1.1% of Fe, 0.01% to 0.4% of Mg, 0% to 0.1% of Si, 0% to 0.2% of B, 0.001% to 0.3% of trace elements, and the balance of Al and impurities, wherein the trace elements comprise at least two of Zr, Mn, Cr and Ag. The aluminum alloy materials are processed through the smelting technology, the casting technology and the rolling technology so that an aluminum alloy rod can be obtained, then, the aluminum alloy rod is drawn, bunched into strands and softened so that an aluminum alloy cable core can be obtained, and next, the conductor cable core is subjected to extruded insulation, cabling and extruded jacketing or armoring so that the aluminum alloy cable can be made. The Al-Fe-Mg aluminum alloy for the coal mine cable has the advantages of being high in strength and electric conductivity, good in bending property and the like. The aluminum alloy cable made from the aluminum alloy can meet the requirements for the performance of the cable in the coal mine field.

The invention discloses a high-heat-dissipation air-ventilation tray type cable bridge, and relates to the technical field of cable bridges. The high-heat-dissipation air-ventilation tray type cable bridge comprises a bridge bottom plate and bridge side plates arranged on the two sides of the bridge bottom plate, wherein the bridge bottom plate is composed of a plate body I, a plate body II, a plate body III and a plate body IV in a spliced manner, wherein the plate body I comprises a side edge I and a side edge II which are opposite to each other; the plate body II comprises a side edge III and a side edge IV which are opposite to each other; the plate body III comprises a side edge V and a side edge VI which are opposite to each other; the plate body IV comprises a side edge VII and a side edge VIII which are opposite to each other; the side edge I is fixedly connected with the bridge side plate; the side edge II is hinged to the side edge III; the side edge IV is hinged to the sideedge V; the side edge VI is hinged to the side edge VII; the side edge VIII is fixedly connected with the other bridge side plate. The invention further discloses a preparation method of the high-heat-dissipation air-ventilation tray type cable bridge. The width of the bridge can be adjusted according to needs, the cables can be placed in a classified mode, and meanwhile, the bridge has high heatdissipation performance.

The invention discloses an aluminum alloy and a preparation process thereof, belonging to the technical field of metal material smelting. The aluminum alloy comprises the following components in parts by weight: 80-92 parts of Al, 2-6 parts of Mg, and 3-3 parts of Zn 7 parts, Cu 0.8-3.2 parts, Si 3-8 parts, Cr 0.1-0.5 parts, Ge 0.1-0.3 parts, Zr 0.12-0.18 parts. The invention provides an aluminum alloy and a preparation process thereof, which have the advantages of effectively reducing quenching residual stress and not being easily deformed in subsequent machining.

The invention provides a turn seat supporting plate which is made of aluminum alloy. The aluminum alloy comprises the following ingredients in mass percent: 5.0-6.5% of Si, 0.5-0.7% of Mn, 0.17-0.35%of Mg, 1.3-1.5% of Fe, 0.5-0.75% of Ni, 0.3-0.5% of Cu, 0.4-0.5% of nanometer VC, 2.8-7.9% of Ti3N4 and the balance of Al and inescapable impurities. The turn seat supporting plate has the beneficialeffects of good mechanical property, light mass, high flexibility and stable performance.

The invention relates to a high-strength and high-tenacity aluminum alloy material. The high-strength and high-tenacity aluminum alloy material comprises 9.5%-11.0% of Si, 1.5%-3.5% of Cu, 0.05%-2% of Fe, 1.0%-1.5% of Mn, 0.4%-0.6% of Mg, 0.1%-0.2% of Cr, 0.01%-0.2% of Pb, 0.1%-0.2% of Ti, 0.01%-0.02% of Ni, 1%-3% of Zn, 0.1%-0.4% of Sn and the balance Al. Through material composition changing, the high-strength and high-tenacity aluminum alloy material is obtained, the problem that a cast aluminum alloy is insufficient in strength is solved, and good application prospects are achieved.

A metallic separator for fuel cells having a metal plate, an electroconductive coating layer covering at least a surface in front and back surfaces of the metal plate which contacts a raw material and/or a reaction product, and an electroconductive channel-forming member disposed on a surface of the coating layer and forming a channel for the raw material and/or the reaction product and/or a channel for a cooling medium for cooling. A surface layer on the metal plate has a tensile residual stress within such a range that no stress-corrosion cracking occurs.

The invention discloses a preparation method of a titanium-aluminum alloy target material. According to the technical scheme, the preparation method of the titanium-aluminum alloy target material comprises main material powder, ingredient powder and trace powder, and further comprises the following steps that S1, the main material powder, the ingredient powder and the trace powder are mixed to beuniform, large-particle impurities are filtered out, powdery particles with the equal size are reserved, and mixed powder is obtained; and S2, the mixed powder remained after filtering in the step S1is poured into medical alcohol for soaking and cleaning; The preparation method of the titanium-aluminum alloy target material has the beneficial effects that the titanium-aluminum alloy target material is prepared by adding the ingredient powder composed of silicon powder and magnesium powder and the trace powder composed of chromium powder and then adopting a powder metallurgy method, the strength of the alloy is improved, the casting performance, the corrosion resistance and the welding performance are all improved, the finally prepared titanium-aluminum alloy target material is excellent in performance, balanced in attributes in all aspects and simple in production process, and therefore the production cost can be reduced, and production is more economical.

The invention discloses a rail aluminum profile and a preparation method thereof. The rail aluminum profile comprises the following main components in percentage by mass: 1.35-1.5% of Mg, 0.1-0.2% of Si, 2.0-4.0% of Zn (Zn = 2.7 Mg), 0.09-0.12% of V, 1.0-2.2% of Mn, 3.5-4.5% of Cu, 0.1-1.3% of Cd, 0.1-0.3% of Cr, 0.1% of mischmetal, 0.01-0.05% of Ti and the balance of aluminum and inevitable impurities, the content of Zr accounts for 0.04-0.08%, and the balance is Al. According to the method, raw materials are prepared according to the mass ratio, semi-continuous casting is used, and the extrusion process and the solution treatment process are optimized, so that the strength and the tensile property of the track are greatly improved, the loading capacity of the track is enhanced, meanwhile, the stability of a track sliding groove is improved, and the requirement for the performance of the track in industrial manufacturing is met.