电话:15930299808 手机:13903124561
新闻中心
联系方式
保定AG真人机械设备有限公司
地址:保定市保满路收费站东侧路北
联系人:孟经理、吴经理
手机:13903124561
手机:15930299808
网址:www.legsfeetandmore.com
生产加工:托辊设备、托辊机械制造
首页:公司动态 >> 大型托辊热处理工艺创新

大托辊成形工艺是采用常规油冷却,能够保证其硬度要求,但淬硬层硬度值和性能指标基本偏下限。为了提高大托辊的硬化层深度和力学性能,同时考虑到节能降耗,根据现场实际装炉情况进行分析评审;其次参照《重型机械标准》及《大锻件热处理》等资料作为理论依据,同时根据长期从事热处理工作经验,确定采用非常规的“水空水”新工艺,制定工艺时考虑到大型锻件内部可能存在缺陷的因素,保守确定水冷时间,合理确定空冷时间,从而保证大托辊质量。 The high roller forming process adopts conventional oil cooling, which can guarantee its hardness, but the hardness value and performance index of the hardened layer are lower. In order to improve the depth and mechanical properties of the hardened layer of the large roller, the analysis and evalsuation of the actual furnace condition in the field are also given in consideration of the energy saving and decreasing consumption. Secondly refer to "standard of heavy machinery" and large forging heat treatment and other information as the theoretical basis, at the same time, based on the experience of long-term work in the heat treatment, to determine the unconventional "water empty" new technology, develop process when considering the large forgings internal factors may be flawed, conservative to determine water cooling time, reasonable air cooling time, so as to ensure the quality of the roller. 成果创新点是采用“水空水”新工艺,增加淬硬层深度,提高力学性能,缩短炉内剩余零件加热时间,同时也缩短了生产周期,达到节能降耗的目的,为分公司提高经济效益。 Results innovations is to adopt new technology of "water" empty water, increase the depth of hardening layer, and improve the mechanical properties, shorten the heating time remaining in the furnace parts, but also shorten the production cycle, achieve the goal of saving energy and reducing consumption, improve the economic benefit for affiliates. 2.新工艺试验 New process test 选用两个工件,分别进行常规油冷却和非常规的“水空水”新工艺试验,并在靠近外圆端面位置切取试环进行机械性能和淬硬层深度检测。 Choose two artifacts, respectively for regular oil cooling and unconventional "water empty" new process test, and the outer circle taking try ring end position detection of mechanical properties and the depth of hardening layer. (1)采用原始成形工艺对大托辊进行调质处理,工艺曲线如图1所示。 (1) the process curve is shown in figure 1, using the original forming process for the processing of large roll. 经检测表面硬度为240~265HBW;切取Φ1400mm×30mm试环,进行淬硬层深度检测见表1和力学性能检测见表2。 The surface hardness of the test is 240 to 265HBW. Try taking Φ 1400 mm x 30 mm rings, is used to detect the depth of the hardened layer are shown in table 1 and mechanical performance test are shown in table 2. (2)采用“水空水”新工艺对大托辊进行调质处理,由于大锻件采用水冷有一定的风险,水冷时间控制不合理,会使发生开裂现象,根据多年调质工作经验,并参照相关资料确定水冷的时间按0.4~0.6s/mm计算,故大托辊水冷时间应为2.5~4min,工艺曲线如图2所示,生产过程如图3所示。 (2) the new technology of "water" empty water conditioning treatment was carried out on the big roller, because of the large forgings used water has certain risk, water cooling time control is not reasonable, can make the cracking phenomena occur, according to many years experience in the quenched and tempered, and with reference to the relevant data to determine the cooling time is calculated at 0.4 ~ 0.6 s/mm, so the big roller cooling time should be 2.5 ~ 4 min, process curve as shown in figure 2, the production process is shown in figure 3. 经检测表面硬度为245~265HBW;与油冷件相同位置切取试环,进行淬硬层深度检测见表1,力学性能指标检测见表2。 The surface hardness of the test is 245 ~ 265HBW. In the same position as the oil cooling parts, the test ring is taken, the depth test of the hardened layer is shown in table 1, and the mechanical performance index test is shown in table 2.

[来源:原创] [作者:aoutmy] [日期:17-05-15] [热度:]
版权保定AG真人机械设备有限公司 电话:15930299808 手机:13903124561 新闻技术 网址:www.legsfeetandmore.com
地址:保定保满路收费站东侧路北 生产加工:托辊设备、托辊加工设备、托辊生产设备、托辊机械设备制造厂家,托辊设备价格公道!
友链推荐:不锈钢铸件
保定网站建设及优化保定遨游网络公司