钢锉,锉刀,河北全工
    关注首页  | 公司简介  | 产品展示  | 新闻资讯  | 企业荣誉  | 企业形象  | 网上订购  | 联系我们  | 企业邮局  |  
日期:
 
锉刀
锉刀系列
包装系列
锉柄系列
 
河北全工
地址:无锡市人民东路389号
电话:+86-0510-822627澳门新葡亰游戏平台app   68901536
传真:+86-0510-80215578
网址:www.dr-medika.com
          www.wxxifeng.com
邮箱:jsxifeng@163.com
钢锉
 新闻资讯 =>  

T澳门新葡亰游戏平台app钢锉刀快速app工艺怎么处理?

发布日期:[2018-10-25]    共阅[2681]次
    国内钢锉基本上都是用T澳门新葡亰游戏平台app钢制造。锉刀锻坯必须经过app退火才
能满足随后机械加工的要求。虽然高游戏的退火被认为是成熟的
传统工艺,但因其能耗高,周期长(一般需24h/炉),氧化脱碳
严重,生产效率低,促使人们对这一工艺的研究和改进。
Domestic steel files are basically made of T澳门新葡亰游戏平台app steel. The
forged billet must be spheroidizing to meet the
requirements of subsequent machining. Although annealing
of high carbon steel is considered to be a mature
traditional process, its high energy consumption, long
cycle (usually 24h / furnace), serious oxidation and
decarbonization, low production efficiency, prompt people
to study and improve this process.
1)app退火工艺改进的理论依据。
1) the theoretical basis for improving spheroidizing
annealing process.
①根据有关文献的报导,在常规app退火的组织中,粒(球)状
新葡亰物颗粒数(单位体积内或单位面积上)与加热奥氏体化时的
剩余新葡亰物颗粒数相同,由此认为app退火后的粒(球)状新葡亰
物是由剩余新葡亰物长大而成。这就告诉我们加热奥氏体化时获得
的剩余新葡亰物颗粒数越多,app后的粒(球)状新葡亰物也就越
多,app越容易。
(1) According to the relevant literature, the number of
granular (spherical) carbide particles in the
conventional spheroidized annealed microstructure is the
same as that of the residual carbide particles in the
austenitized microstructure. It is considered that the
granular (spherical) carbide after spheroidized annealing
is formed by the growth of residual carbide. This tells
us that the more residual carbide particles obtained
during austenitizing, the more spheroidized carbide
particles, and the easier spheroidization.
②有研究证明,app退火时有了粒状新葡亰物的核心只是app的一
个方面,因为这些剩余新葡亰物在随后的奥氏体过冷分解中,既可
以作为共析分解的领先相,促使分解的另一相(α)作为受领相
在其表面上形核,从而形成了共析相的核心,此核心长大的结果
必然是两相相间交错分布层片状珠光体(PL)。此外,还有一种可
能,就是剩余新葡亰物粒化的现存的核心,但分解的另一相(α)
却不作为受领相,即不优先在新葡亰物表面上形核,而是在过冷奥
氏体内部深处单独形核,这种奥氏体分解产物的两个相分别独立
形核(不构成共析体核心)时,所造成的母相奥氏体内碳浓度分
布与共析转变时不同,它将促使新葡亰物和α相各自单独呈球状长
大,从而得到粒(球)状珠光体( Ps)。奥氏体化时得到的碳浓度
不均匀的奥氏体可明显加速Ps的形成过程。
(2) It has been proved that the nucleus of granular
carbides during spheroidizing annealing is only one
aspect of spheroidization, because these residual
carbides can be used as the leading phase of eutectoid
decomposition in subsequent subcooled decomposition of
austenite, and the other phase (a) of decomposition can
be nucleated on its surface as the receiving phase, thus
forming the eutectoid phase. The core of this core growth
is necessarily the interphase and intergranular
distribution of lamellar pearlite (PL). In addition, it
is also possible that the existing core of residual
carbide granulation, but the decomposition of another
phase (a) does not act as the receiving phase, that is,
does not take precedence in nucleating on the surface of
the carbide, but in the depths of the undercooled
austenite alone nucleation, the two phases of the
decomposition product of the austenite nucleate
independently (does not constitute eutectoid). The
distribution of carbon concentration in the parent
austenite is different from that in eutectoid
transformation. It will promote the growth of carbides
and alpha phases in spherical shape respectively, so that
the granular (spherical) pearlite (Ps) can be obtained.
The austenitizing of austenite can accelerate the
formation of Ps obviously.
③加热过程的控制理论。有研究者根据钢加热奥氏体化的转变图
和加热转变时奥氏体的形成及其内碳浓度变化的原理指出,通过
调整加热工艺的三个参数(加热速度、加热温度和保温时间)可
以控制奥氏体状态,从而满足前述理论的要求。在理论上控制仪
相消失的温度,时间以透烧为准。
3. Control theory of heating process. According to the
austenitizing transformation diagram of steel and the
formation of austenite and the change of carbon
concentration in the austenite during heating
transformation, it is pointed out that the austenite
state can be controlled by adjusting the three parameters
of heating process (heating speed, heating temperature
and holding time), so as to meet the requirements of the
above theory. In theory, the temperature of the
disappearance of the instrument is controlled by time.
2)快速app退火工艺及效果。根据理论研究和现场测试结果,在
不改变退火前后的冷热加工工艺的情况下,在现有的几台不同的
炉内对不同类型和规格的锉刀毛坯进行快速app退火试验,结果
见表3-6。app退火的加热温度应根据所测炉子的热特性确定,而
保温时间除取决于炉子的热特性外,还与退火锉刀类型及装炉量
有关。保温时间总的来说由原来的5~6. 5h缩短到70~ 90min,降
温时间(指780℃奥氏体温度降至app下限温度680℃所需的时
间)由原来的9.5~10h减少到4.5~5h,而且无跑温现象出现。
2) rapid spheroidizing annealing process and effect.
According to the results of theoretical research and
field test, the rapid spheroidizing annealing tests of
different types and specifications of file blanks were
carried out in several existing furnaces without changing
the cold and hot working processes before and after
annealing. The results are shown in Table 3-6. The
heating temperature of spheroidizing annealing should be
determined according to the thermal characteristics of
the furnace, and the holding time depends not only on the
thermal characteristics of the furnace, but also on the
type of annealing file and the amount of furnace. In
general, the holding time is shortened from 5-6.5 h to
70-90 min, and the cooling time is reduced from 9.5-10 h
to 4.5-5 h, and there is no running temperature
phenomenon.
 

转载本文请注明: //www.dr-medika.com/NewsInfo.asp?id=177

免责声明:文章均来自于网络。其原创性以及文中陈述文字和内容未经本站证实,对本文以及其中全部或者部分内容、文字的真实性、完整性、及时性本站不作任何保证或承诺,请读者仅作参考,并请自行核实相关内容。


上一条:低游戏锉刀热处理工艺 下一条:T澳门新葡亰游戏平台appA钢锉刀热处理工艺是什么样的?
【 字体: 】【打印此页】 【关注】【顶部】【关闭
 
  主要产品:钢锉|锉刀|钳工锉|锯锉|什绵锉|钢木锉|带柄套锉|农镰锉|圆钢锉|菱形锉|尖头单纹米尔锉|铝扁锉刀|木半圆锉刀
  澳门新葡亰游戏平台app:澳门新葡亰官网下载            苏ICP备09056372号                网站全程策划:无锡易商科技
  电话:0510-822627澳门新葡亰游戏平台app      68901536   传真:0510-80215578    地址:无锡市人民东路389号     邮箱:jsxifeng@163.com
龙8国际娛乐网页万博体育网 千亿体育正规网站