7 停止线f,图2。该绳索从线轴p,图2通过试样框架和试验室壁上提供的适当螺纹导管延伸,允许绳索在距点火火焰中心撞击试样点5英寸处的适当位置进行系带。停止线由50号丝光缝纫线组成,纺织品阻燃性测试仪,用于测量试样火焰的上升和蔓延。
(7)
stop cord (f, fig. 2). this cord,销售纺织品阻燃可燃性测试仪, stretched from the spool ( p, fig.
2) through suitable thread guides provided on the specimen frame&chamber
walls, permits the lacing of the cord in the proper ition exactly 5 inches
from the point where the cct of the ignition flame impinges on the test
specimen. the stop cord cists of a no. 50 mercerized sewing thread and
measures the rise&spread of the flame from the test specimen.
lfy-602b 小45°阻燃性能测定仪主要用途
2、采用集微电子技术、计算机技术、自动控制技术于一体的plc控制,利用其内部循环扫描的工作方式,对整个燃烧过程进行--控制测量。
4、点火时间:1s、5s、20s,分辨率:0.01s
5、点火器口径:41/2号针头
6、试样尺寸:150mm×50mm
7、试样架:可支撑、固定试样夹,使其倾斜为45°角,并可根据试样的不同厚度调节其与火焰前端的相对位置。
8、试样夹尺寸:由两块厚度2.0mm的u形钢板组成,内框:152mm×38mm,可燃性,试样固定于两板中间,两边用夹子夹紧。
(2)
specimen rack (b,生产纺织品可燃性测试仪, fig. 2). the specimen rack provides supports for the
frames in which the specimens are mounted. the angle of inclination is 45°. two
guide pins projecting downward from the cct of the base of the rack travel
in slots provided in the floor of the chamber so that adjustment can be made
for the thickness of the specimen in relation to the flame front. a stop is
provided in the base of the chamber to assist in adjusting the ition of the
rack.
2 样本架b,图2。样品架为安装样品的框架提供支撑。倾角为45°。从机架底座中心向下-的两个导销在燃烧室地板上的槽中移动,以便调整试样相对于火焰的厚度。腔室底部设有止动块,以帮助调整齿条的位置。
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