1) HRB335 screw steel
HRB335螺纹钢
1.
By studying on solidified structure of HRB335 screw steel by electric pulse treatment, it is found that the solidified structure of HRB335 screw steel improves after electric pulse treatment, the grain is refined, dendritic crystallites reduce and equiaxed crystallites increase.
对HRB335螺纹钢在凝固过程中进行电脉冲处理。
2) HRB335 steel
HRB335钢
1.
The smelting, continuous casting of 150 mm×150 mm billet of HRB335 steel are introduced, some problems in production analyzed, measures proposed, good effect got.
介绍了承德建龙HRB335钢150mm×150mm方坯的冶炼、连铸工艺,分析了生产过程中出现的一些问题,并提出了有效措施,取得了良好效果。
2.
In the experiment HRB335 steel was treated by impulse current, and the maximum current, frequency and processing time were considered together.
采用正交实验方法对HRB335钢进行电脉冲处理。
3.
Based on the actual situation in the Changgang Company,the reason for the production of deblooming for continuous casting billet of HRB335 steel and the effect produced after taking relative measures have been analyzed.
本文结合长钢的实际,分析了 HRB335钢铸坯脱方产生的原因,以及采取相应的措施后,取得的效果。
3) HRB335/400 steel
HRB335/400钢
4) HRB335 bars
HRB335钢筋
1.
This paper analyses the cause of low elongation values in tensile of φ32 HRB335 bars.
分析φ32 HRB335钢筋在常规力学检验中出现伸长率低的原因。
5) HRB 335-grade reinforcement
HRB335级钢筋
6) thread steel
螺纹钢
1.
Based on an analysis on the cooling simulating experienment to the brittleness of 20MnSi thread steel, the paper determines that Granular B is not the major factor of the brittle snap of steel.
针对20MnSi螺纹钢的脆断性进行轧后模拟冷却试验及分析。
2.
The application of grooveless rolling in the splitting rolling of small size thread steel has been described in this paper.
介绍了无槽轧制在小规格螺纹钢切分生产中的应用。
3.
Through adjusting steel composition,combining controlled rolling temperature and controlled cooling,460B thread steel is produced to meet user\'s needs.
通过对钢种成分进行适当调整,结合轧制温度及冷却控制,批量生产出满足用户需求的460B螺纹钢。
补充资料:攻螺纹、套螺纹及其注意事项
常用的在角螺纹工件,其螺纹除采用机械加工外,还可以用钳加工方法中的攻螺纹和套螺纹来获得。攻螺纹(亦称攻丝)是用丝锥在工件内圆柱面上加工出内螺纹;套螺纹(或称套丝、套扣)是用板牙在圆柱杆上加工外螺纹。
一、攻螺纹
1.丝锥及铰扛
(1)丝锥
丝锥是用来加工较小直径内螺纹的成形刀具,一般选用合金工具钢9SiGr制成,并经热处理制成。通常M6~M24的丝锥一套为两支,称头锥、二锥;M6以下及M24以上一套有三支、即头锥、二锥和三锥。
每个丝锥都有工作部分和柄部组成。工作部分是由切削部分和校准部分组成。轴向有几条(一般是三条或四条)容屑槽,相应地形成几瓣刀刃(切削刃)和前角。切削部分(即不完整的牙齿部分)是切削螺纹的重要部分,常磨成圆锥形,以便使切削负荷分配在几个刀齿上。头锥的锥角小些,有5~7个牙;二锥的锥角大些,有3~4个牙。校准部分具有完整的牙齿,用于修光螺纹和引导丝锥沿轴向运动。柄部有方头,其作用是与铰扛相配合并传递扭矩。
(2)铰扛
铰扛是用来夹持丝锥的工具,常用的是可调式铰扛。旋转手柄即可调节方孔的大小,以便夹持不同尺寸的丝锥。铰扛长度应根据丝锥尺寸大小进行选择,以便控制攻螺纹时的扭矩,防止丝锥因施力不当而扭断。
2.攻螺纹前钻底孔直径和深度的确定以及孔口的倒角
(1)底孔直径的确定
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条