摘要:
A motor vehicle having a stainless supporting frame structure or a stainless body-in-white, including a supporting frame structure and flat body components mounted thereon, the supporting frame structure being formed of rust-resistant steels as well as light metal alloys and/or plastics and the flat body components being formed of rust-resistant steels, light metal alloys and/or plastics, the surface of the supporting frame structure or the body-in-white being free of anti-corrosion coating or anti-corrosion painting. In addition, a method for manufacturing a motor vehicle having a corrosion-resistant body-in-white includes the steps of: manufacturing a supporting frame structure by joining and/or welding together rust-resistant steels; and mounting flat body components and/or body panels made of light metals, plastics, or rust-resistant steels, thereby forming the body-in-white. A color-providing surface coating of the body-in-white is directly applied to the uncoated surface of the rust-resistant steels, light metals, or plastics.
摘要:
An A-pillar on a motor vehicle is provided with a windshield flange for the securing of a windshield. The A-pillar is of single-part design in the region of the windshield and a wall region forming the windshield flange bounds a hollow cross section of the A-pillar. The windshield can be integrated indirectly in the A-pillar, which leads to a reduction in viewing angle obscuration.
摘要:
Processes for manufacture of metal components with high hardness and plasticity by deforming with high degree of deformation of metals, in particular steels, of which the deformation leads to a hardening by TWIP (Twinning Induced Plasticity) or SIP (Shearband Induced Plasticity) Effect, wherein the metal after the final step of annealing or crystallization annealing is deformed in at least one step into a semi finished product or the finished metal component, wherein the total elongation is in the range of 10 to 70%, as well as semi finished products, in particular continuous sheets, of steel with TWIP (Twinning Induced Plasticity) or SIP (Shearband Induced Plasticity) Effect, wherein the semi finished product exhibits a tensile strength of greater than 800 MPa and an elongation of greater than 35%.
摘要:
A density reducing high carbon containing or UHC-steel and particular a superplastic steel, which besides iron and impurities conventionally accompanying steel, contains the following alloy components in wt. %: 0.8 to 2.5% C 3.5 to 15% Al 0.5 to 4% Cr 0.01 to 4% Si up to 4% Ni, Mn, Mo, Nb, Ta, V, and/or W, wherein the steel includes as additional alloy components 0.1 to 0.85 Sn, and 0 to 3% Ti, Be and/or Ga.
摘要:
A density reducing high carbon containing or UHC-steel and particular a superplastic steel, which besides iron and impurities conventionally accompanying steel, contains the following alloy components in wt. %: 0.8 to 2.5% C 3.5 to 15% Al 0.5 to 4% Cr 0.01 to 4% Si up to 4% Ni, Mn, Mo, Nb, Ta, V, and/or W, wherein the steel includes as additional alloy components 0.1 to 0.85 Sn, and 0 to 3% Ti, Be and/or Ga.
摘要:
UHC lightweight structural steel with improved scaling resistance, comprising the composition in % by weight C: 1 to 1.6, Al: 5 to 10, Cr: 0.5 to 3, Si: 0.1 to 2.8, the remainder iron and customary impurities accompanying steel, and a method for producing components hot-formed from this in air, wherein hot-forming temperatures of from 800 to 1050° C. are used, depending on the Si content.
摘要:
Process for production of metallic components by warm forming of blanks of alloys with superplastic micro-structure, wherein the deforming pressure in the deforming tool is kept at least 20% below the deformation pressure necessary for forging of the respective alloy without superplastic micro-structure, and the expansion rate ({acute over (ε)}) of the warm forming is adjusted to a value above 0.1/s, or wherein the expansion of the blank during The warm forming is maintained below 50% of the expansion value achievable by a superplastic deforming and the expansion rate ({acute over (ε)}) which is at least the 100 fold of that for superplastic deformation, as well as drive shafts, gears, pinions or profile pans obtainable thereby.
摘要:
UHC lightweight structural steel with improved scaling resistance, comprising the composition in % by weight C: 1 to 1.6, Al: 5 to 10, Cr: 0.5 to 3, Si: 0.1 to 2.8, the remainder iron and customary impurities accompanying steel, and a method for producing components hot-formed from this in air, wherein hot-forming temperatures of from 800 to 1050° C. are used, depending on the Si content.
摘要:
A steel piston with a piston upper part (12) with combustion chamber recess (11) and ring wall (5), and with a piston lower part (13) with piston body or piston skirt and with connecting rod bearing (8) for internal combustion engines with cylinder crankcases made of lightweight metal alloys, with at least the piston lower part consisting of a steel alloy which has a coefficient of thermal expansion in the range from 13 to 20×10−6 1/K.
摘要:
A cylinder head for internal combustion engines, comprising a metallic valve seat ring that is formed by a thermally sprayed homogeneous layer made of a basic Co or Co/Mo alloy. The sum of the Co content and Mo content in the alloy exceeds 50 percent by weight while the Fe content lies below 5 percent by weight. Also disclosed is a method for thermally spraying said valve seat ring by means of an arc wire spraying process with the aid of at least two filler wires and/or composite wires, the essential Co portion in the deposited layer being delivered by the jacket of the filler wire and/or the matrix of the composite wire.