1) cold draw measurement
冷拔计量
2) Design of cold-drawing process
冷拔工艺设计
3) cooling metering
冷量计量
1.
Presents the control characteristics, charging basis and principle of central air conditioning systems by taking fan coil air conditioning systems as examples and gives a feasible charging method based on cooling metering.
以风机盘管空调系统为例,介绍了集中空调系统的控制特点、计费依据和计费原理,在冷量计量的基础上给出了一种可行的计费方法。
2.
This paper presents the cooling metering problem of central air conditioning systems according to heating metering which is going on in cold area, and analyses the actuality of cooling metering in our country and the meaning of cooling metering method for building energy efficiency, operation of central air conditioning systems and facility management.
分析了我国冷量计量的现状,并且对国内目前采用的冷计量方法进行了介绍和比较。
3.
Briefly presents several cooling metering methods for central air conditioning systems.
简要介绍了集中空调系统的几种冷量计量方法,结合广州大学城新校区内的学生 公寓,提出4种冷计量方案,计算了冷计量收益、各方案的冷计量初投资以及用户年计量投资 费用,并对4种方案进行了分析比较。
4) cold-drawing
冷拔
1.
Test Research on Solid Boronization of Internal Die for Cold-drawing of Steel Tube
钢管冷拔内模固体渗硼试验研究
2.
The paper concerns the process parameters of continuous casting and cold-drawing of 12Cr2MoVWTiB seamless steel pipe for high pressure boiler,proposes the feasibility of produced high pressure boiler pipe of 12Cr2MoVWTiB steel by continuous casting billet,the surface quality and mechanical properties of the boiler pipe can meet the demand of standard GB5310-1995.
介绍了12Cr2MoVWTiB钢高压锅炉管的管坯连铸和冷拔生产工艺参数,提出采取连铸坯生产12Cr2MoVWTiB钢高压锅炉管是完全可行的,表面质量和机械性能等方面都能满足GB5310—1995的要求。
3.
It also provides the basic information for the optimization of roll' s diameter in cold-drawing techniques.
针对滚模冷拔大口径方形管成形工艺,采用有限元仿真软件ANSYS/DYNA对不同滚模直径进行仿真和比较分析,揭示滚模直径对拔制大口径方管力参数和变形的影响,为优选滚模直径参数提供了参考。
5) cold drawing
冷拔
1.
Deformation zone stress distribution of cold drawing rifled tubeswith Finite Element Analysis;
冷拔内螺旋凸筋管变形区应力分布有限元分析
2.
Finite element method for the drawing force of cold drawing rifled tubes;
冷拔内螺纹管拉拔力的有限元计算方法
3.
Effects of mandril position on cold drawing internal rifled tubes;
芯棒位置对冷拔内螺旋凸筋管成型的影响
补充资料：管材旋转模冷拔
管材旋转模冷拔
cold drawing of tube through revolving die
的主动旋转外模与顶头(或芯棒)之间拔制管材的工艺(见图)采用旋转模拉拔，拉拔的部分变形为滚轧所取代，滚珠或滚柱与管材接触表面之间为滚动摩擦。摩擦系数小，可以降低拔制力。这对薄壁管和低塑性材料的拉拔很有利。但是，旋转模冷拔管材存在以下的缺点:(1)旋转槽内滚珠或滚柱的咬入角较小(镇15。)，睿二瑙 滚珠式旋转模的结构及拔管过程 l一端支持环;2一安装在旋转支持器内的模套; 3一管材;4一芯棒guaneai xuanzhuanmu lengba管材旋转模冷拔(eold arawing of:ub。thro-u只h revolving die)室温下在装有滚珠或渡杜使得每转的减壁量不能取大，一般小于滚珠或滚柱直径的2%;(2)为防止管体表面出现螺旋线，旋转模每转动一次管材的轴向送进量必须很小，对于滚珠组装的旋转模，约为管材周长的2%一4%;(3)模内相互接触的滚珠或滚柱体之间以及它们与模套之间摩擦能耗的比重也很大。由于上述原因，旋转模冷拔管材未能在大生产中广泛应用。 (周忠民)
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