摘要:
Ce fil de forme, de qualité NACE, en acier au carbone faiblement allié destiné à être utilisé dans le secteur de l'exploitation pétrolière off shore, se caractérise en ce qu'il présente la composition chimique suivante, exprimée en pourcentages pondéraux de la masse totale, le reste étant du fer et les impuretés inévitables venant de l'élaboration du métal à l'état liquide: 0,75
摘要翻译:NACE级的这种异型钢丝是用于海上石油开采领域的低合金碳钢,其特征在于具有如下化学成分,以总质量的百分比表示:0.75 <% C <0.95; 0.30 <%Mn <0.85; Cr = 0.4%; V = 0.16%; Si = 1.40%,优选= 0.15%; 并且任选地不超过0.06%的Al,不超过0.1%的Ni和不超过0.1%的Cu,余量为铁和由液态熔融金属产生的不可避免的杂质,并且从钢 将热轧棒材冷却至室温,然后直径约5〜30mm,首先将该起始棒进行热机械处理,包括依次进行的两个连续步骤,即等温骤冷,使其成为 均匀的珍珠岩微观结构,然后以整体加工硬化程度(或减少率)至多为50%至80%之间进行冷的机械转化操作,以使线材具有确定的形状,并且其形状 然后将由此获得的线材进行短时间内进行的低于Ac1(优选410至710℃)的恢复热处理,从而获得所需的最终机械性能。
摘要:
The invention relates to a process for wire patenting in which, after passing through a lead bath (1), the wire (3) is drawn on a flat, rising path controlled by guides (2, 4, 9) through a bed (7) of loose abrasive material, preferably coke grit and the wire path inside the granulated bed is changed at intervals or continuously. In wire patenting, the lead bath (1) serves to drop the wire temperature very rapidly and within narrow tolerances from about 1000 to about 500 DEG C, thus giving a microstructure easily drawn. In order to ensure the continuous cleansing of lead from the wire with the part of the process of wire patenting relating to the partial regeneration of the coke grit stripping bed (7), it is proposed according to the invention that the wire path within the granulated bed be determined by three guide members, with the outer two (2, 4) fixed and the centre one (9) movable.
摘要:
The technology described herein provides a method and system to prevent iron oxide formation and decarburization during strand heat treating of a steel product without the subsequent required use of acid pickling, which has associated health and environmental risks. Additionally, this technology provides placing a coating, such as copper plating, to the surface of a steel wire prior to strand heat treating to avoid both iron oxide formation and decarburization through the surface of the steel wire by preventing interactions between the steel wire and the furnace atmosphere. To remove oxides formed by the plating metal, the oxides are chemically reduced by passing the steel wire through a reducing gas, electrolytically reduced by plating with the wire anodic, mechanically reduced through the use of brushes, or the like, or chemically reduced by acid pickling.
摘要:
A method of and an apparatus for guiding at least one steel wire (3) from a furnace (1) into a lead bath (2), whereby the said steel wires (3) are kept separated, and, after leaving the furnace (1), guided over a cooled roller (5), which roller (5) is turning at a peripheral speed that nearly equals the speed of the steel wires (3), after which the steel wires (3) disappear into the lead bath (2) and are guided further under an immersed roller (6), the steel wires (3) making an angle larger than 150 DEG over the cooled roller (5) and under the immersed roller (6), and whereby the furnace-lead bath transition is sealed by a hood (7) that lets through as little air as possible.
摘要:
A method of producing an ultrafine steel wire with a diameter of at most 0.4 mm and a tensile strength of at least 360 kgf/mm , which comprises hot rolling and drawing, after subjecting to diffusion treatment if necessary, steel containing 0.91 to 1.00 wt % of carbon, at most 0.4 wt % of silicon, at most 0.5 wt % of manganese, 0.10 to 0.30 wt % of chromium, and the balance of iron and unavoidable impurities, subjecting to final patenting to attain a wire strength of 140 to 160 kgf/mm , and further drawing the wire at a die angle of 8 to 12 DEG with a true strain of at least 3.50.
摘要翻译:一种生产直径最大为0.4mm,拉伸强度为至少360kgf / mm 2的超细钢丝的方法,其包括热轧和拉伸,如果需要,进行扩散处理后,将含有0.91〜 1.00重量%的碳,至多0.4重量%的硅,至多0.5重量%的锰,0.10至0.30重量%的铬,余量的铁和不可避免的杂质,进行最终授权以获得线强度为140 至160kgf / mm 2,并且以8至12°的模角进一步拉丝,真实应变为至少3.50。
摘要:
The wire is cooled from a temperature above its critical point (A3), called the austenitizing temperature, to room temperature, by at least three distinct and successive stages, at least the first two stages involving water cooling and the last stage involving air cooling. Cooling of the wire is controlled separately in each said stage, by acting respectively on the water's temperature or the air's speed. Thereby, an average heat flux comparable to that of lead patenting is achieved.
摘要:
A device for heating simultaneously one or several steel cables consists essentially of a gas-heated oven through which the steel cables pass continuously. To delimitate the cable chamber, a fire-resistant plate arranged inside the device has a length in the direction of movement of the cables which corresponds to a section of the length of the inner chamber on the outlet side, and jet nozzles for introducing the protective furnace gas open in the area of the outlet end of the cable chamber.
摘要:
The process for manufacturing a steel wire comprises: providing a steel wire; austenitizing said steel wire; patenting said steel wire; drawing said steel wire. The patenting of said steel wire comprises: slow cooling said steel wire to a first predetermined temperature; quick cooling the steel wire to a second predetermined temperature; keeping said steel wire at said second predetermined temperature. During the slow cooling, the steel wire substantially keeps its austenite structure unaltered; with the subsequent quick cooling, the steel wire is taken to the best conditions in order to start the phase change in which the austenite structure is transformed into a pearlite structure.
摘要:
The process for manufacturing a steel wire comprises: providing a steel wire; austenitizing said steel wire; patenting said steel wire; drawing said steel wire. The patenting of said steel wire comprises: slow cooling said steel wire to a first predetermined temperature; quick cooling the steel wire to a second predetermined temperature; keeping said steel wire at said second predetermined temperature. During the slow cooling, the steel wire substantially keeps its austenite structure unaltered; with the subsequent quick cooling, the steel wire is taken to the best conditions in order to start the phase change in which the austenite structure is transformed into a pearlite structure.