RMA 标准

无绪

今有同事问起来 说有RMA标准的, 偶查了一些资料
不知道是不是也是有年鉴的 或是什么标准的?
- t$ E4 j2 U) `% Q
2 g, v, N# _1 G4 L6 J  ~: `5 @备注: 我们轮胎行业一般只用TRA的 是轮胎的标准
: m, s4 F( h) F0 j==============
没有人可以邦偶么?  RMA有没有轮胎的标准啊

llxliul

小弟只有一个公差的表, 看看能不能帮上你

YYoung

什么版本的啊
, t- g( W0 W9 ]4 E8 C2 P我想要一个最新版本的

tom.zhang

2005橡胶制品 有没有？

zc_dxw

看看                                          

qcxybbs

The RMA (Rubber Manufacturers Association) established specifications for Conveyor Belting grades several decades ago. Though many early members of the association are no longer manufacturing conveyor belting, the RMA updated the standards to accommodate the new raw materials utilized in belt manufacturing.
The RMA only grades rubber belting for the most commonly used industrial belts (generally SBR, natural or a combination).  The carcass fabrics are essentially the same when covered by specialty rubbers such as Neoprene, Nitrile or Chlorobutal.  We list the original standards for the three grades of general purpose belts below.
RMA Original Specifications
RMA Grade #1 Cover tensiles of 3500 to 4000 lbs. Adhesion between components of 20 to 24 lbs
RMA Grade #2 Cover tensiles of 2500 to 3000 lbs. Adhesion between components of 16 to 19 lbs.
$ x1 R1 ?4 e. e: _! ERMA Grade #3 Cover tensiles of 800 to 1000 lbs. Adhesion between components of 12 to 15 lbs.
Because cotton was the basic carcass material when the RMA established these standards, adhesions were more difficult to achieve.  Today, with synthetic fabrics and RFL treatments, average adhesions are in the 60 to 70 lb. range on most general purpose belts.
1 l: t5 g$ A5 N/ M( E* N$ hThough clouded by the introduction of more modern rubbers such as EBR (Polybutadiene), there is little justification for relaxing the cover tensiles first prescribed -- unless manufacturers want the freedom to use lesser rubbers.  We list the new specifications below
& f/ m9 G0 F$ R. t# x9 |RMA 1994 Specifications
0 j6 |  I% [& y$ t& w* CRMA Grade #1        Cover tensiles of 2500 lbs.      400% elongation.
: `- k" Q7 l- o3 [9 t9 {. Q/ U2 w( y3 lRMA Grade #2        Cover tensiles of 2000 lbs.        400% elongation..
RMA Grade #3        No specifications.

老毒物

有中文版的吗？

龙行天下

呵呵，7楼的老毒物，你把6楼的输送带的资料自己翻一下呀 ，人家都贴出来了，你还不要？

老毒物

我要的是制品的，不是输送带的

sun141421

也想了解下rma的规定