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硼钢在我国已得到了大量生产和广泛应用,并在机械工业中占有比较重要的地位。我厂生产汽车采用的钢材中,就有调质硼钢、渗炭硼钢、弹簧硼钢和低碳马氏体硼钢四种,约占整车钢材总重量的20％左右。现用40MnB和20MnVB钢,就占合金结构钢总重量的73.5％。因而达到了基本上不用镍、少用铬等合金元素来制造汽车结构件。但是,硼钢在使用过程中,也还存在着一些问题。对调质硼钢来说,主要是淬透性能和冲击韧性不够稳定、波动较大。其主要原因是与钢中硼等元素含量和钢材的生产、机械零件
Boron steel in our country has been mass-produced and widely used, and holds a relatively important position in the machinery industry. I plant the car used in steel, there is quenched and tempered boron steel, boron steel boron infiltration, spring boron steel and low carbon martensitic boron steel four, accounting for about 20% of the total weight of the vehicle steel. Currently used 40MnB and 20MnVB steel, steel accounts for 73.5% of the total weight of structural steel. So basically achieved without nickel, less alloy elements such as chromium to make automobile structural parts. However, boron steel in use, there are still some problems. Quenched and tempered boron steel, the main hardenability and impact toughness is not stable enough, volatile. The main reason is the content of boron and other elements in the steel and steel production, mechanical parts