摘要:
The invention relates to a method for joining of at least two materials, non-weldable directly to each other with thermal joining processes in a lap joint configuration, where a two step sequence is used consisting of a first step to apply a thermomechanical or mechanical surface protection layer on the surface of a (stainless) steel substrate (1) and a second step where, a thermal joining process is used to weld the sprayed layer (2) with an applied aluminum sheet (3) without having brittle intermetallic phases in the whole material configuration.
摘要:
The invention relates to a method for manufacturing flexible rolling of metal strips, in which a metal strip with predefinable material thickness consisting is guided through a mill stand by at least two operating steps, which is containing several rolls, the metallic strip is during the rolling operation set to lead through a roll gap, where the curve bending line is steered to achieve a defined profiles.
摘要:
The invention relates for a method for partial hardening of an austenitic steel by utilizing during cold deformation the TWIP (Twinning Induced Plasticity), TWIP/TRIP or TRIP (Transformation Induced Plasticity) hardening effect. Cold deformation is carried out by cold rolling on at least one surface (2,3;12) of the material (1,11) to be deformed with forming degree (Φ) at the range of 5 ≤ Φ ≤ 60 % in order to achieve in the material (1,11) at least two consecutive areas (5,7;14,16) with different mechanical values in thickness, yield strength Rp0.2, tensile strength Rm and elongation having a ratio (r) between ultimate load ratio ΔF and the thickness ratio Δt at the range of 1.0 > r > 2.0, and which areas are mechanically achieved to connect to each other by a transition area (6;15) which thickness is achieved variable from the thickness (t1,t3) of the first area (5,14) in the deformation direction (4,13) to the thickness (t2,t4) of the second area (7,16) in the deformation direction (4,13). The invention also relates to the use of the cold deformed product.
摘要:
The present invention relates to an arc furnace bottom construction for maintaining the outer surface temperature of the bottom construction essentially at least on the lower part of the arc furnace essentially close to the temperature surrounding the arc furnace. The bottom construction contains at least two constructions (3,7) to be cooled and being positioned to each other in different heights seen from the side view.
摘要:
The invention relates to a method for manufacturing a component with high work hardening rate made of a material having austenitic microstructure. A cold work hardened material for a component (1) is heat treated to create at least one softened area (2) with high ductility and lower strength than the initial high strength material by heat treating a part of the component material required for the softened area (2). The invention also relates to a use of the component.
摘要:
The invention relates to an austenitic high-manganese stainless steel having high strength and ductility. The stainless steel which consists of in weight % 0,03 - 0,1 % carbon, 0,08 – 1,0 % silicon, 14 – 26 % manganese. 10,5 – 18 % chromium, less than 0,8 % nickel, 0,05 – 0,6 % copper, 0,1 – 0,8 % nitrogen and 0,0008 – 0,005 % boron, the rest being iron and inevitable impurities occurred in stainless steels, and the stainless steel is cold deformable utilizing the TWIP (TWinning Induced Plasticity) mechanism.
摘要:
The invention relates to a duplex ferritic austenitic stainless steel having high formability utilizing the TRIP effect and high corrosion resistance with the balanced pitting resistance equivalent. The duplex stainless steel contains less than 0,04 weight % carbon, 0,2 - 0,8 weight % silicon, less than 2,0 weight % manganese, 16,5 - 19,5 weight % chromium, 3,0 - 4,7 weight % nickel, 1,5 - 4,0 weight % molybdenum, less than 3,5 weight % tungsten, less than 1 weight % copper, 0,13 - 0,26 weight % nitrogen, the rest being iron and inevitable impurities occurring in stainless steels.
摘要:
The invention relates to an austenitic stainless steel with improved pitting corrosion resistance and improved strength. The stainless steel contains in weight % less than 0,03 % carbon (C), 0,2 - 0,6 % silicon (Si), 1,0 - 2,0 % manganese (Mn), 19,0 - 21,0 % chromium (Cr), 7,5 - 9,5 % nickel (Ni), 0,4 - 1,4 % molybdenum (Mo), less than 1,0% copper (Cu), 0,10 - 0,25 % nitrogen (N), optionally less than 1,0 % cobalt (Co), optionally less than 0,006 % boron (B), and the rest being iron (Fe) and inevitable impurities.
摘要:
The invention relates to a method for the removal of an oxidation from a surface of metal object. It is directed to an oxidation (3,12) on the surface of a metal object (2,11) at least one laser beam (4,13), which is essentially absorbed on the surface of the oxidation (3,12) existing on the surface of the metal object, in which case the oxidation (3,12) is heated and the oxidation (3,12) is made to remove without any mechanical treatment.
摘要:
The invention relates to a low-nickel austenitic stainless steel with high resistance to delayed cracking and the use of the steel. The steel contains in weight % 0,02 - 0,15 % carbon, 7 - 15 % manganese, 14 - 19 % chromium, 0,1 - 4 % nickel, 0,1 - 3 % copper, 0,05 - 0,3 % nitrogen, the balance of the steel being iron and inevitable impurities, and the chemical composition range in terms of the sum of carbon and nitrogen contents (C+N) and the measured Md3o-temperature is inside the area defined by the points ABCD which have the following values Point M d30 °C C+N % A - 80 0,1 B + 7 0,1 C - 40 0,40 D - 80 0,40.
摘要翻译:本发明涉及一种高耐延迟开裂的低镍奥氏体不锈钢和钢的使用。 钢包含重量%0.02-0.15%碳,7-15%锰,14-19%铬,0.1-4%镍,0.1-3%铜,0.05-0.0% 3%的氮,钢的余量为铁和不可避免的杂质,化学成分范围为碳氮含量(C + N)和测得的Md3o温度之和在ABCD 其具有以下值:点Md30℃C + N%A - 80 0,1 B + 7 0,1 C - 40 0,40 D - 80 0,40。