论文部分内容阅读
一、碳素钢 碳的含量在2.1％以内的铁碳合金。 (一)按含碳量的多少来分,可分为低碳钢、中碳钢、高碳钢三类。 1.低碳钢。含碳量小于0.2％的碳素钢。这种钢的韧性和塑性较好,易于成形,常用于制造对强度要求不高的零件,如铆钉、销子、钢管、薄钢板、机具设备的梁架、支架等。但它的硬度和强度较低,若工件既要求有韧性,又要求有较高的耐磨性(如活塞、齿轮等),可对其表面作表面渗碳处理。
First, the carbon content of carbon steel within 2.1% of the iron-carbon alloy. (A) According to the amount of carbon content can be divided into low-carbon steel, medium carbon steel, high carbon steel three categories. Low carbon steel Carbon steel with carbon content less than 0.2%. The toughness and ductility of this steel is good, easy to shape, commonly used in the manufacture of less demanding parts of the strength, such as rivets, pins, pipe, sheet steel, machine equipment, beams, brackets and so on. However, its hardness and strength is low, if the workpiece requires both toughness, but also requires a higher wear resistance (such as pistons, gears, etc.), its surface carburizing treatment for the surface.