Rotational molding, tseem hu ua rotational molding, yog ib txoj kev hollow molding rau thermoplastics. Cov txheej txheem feem ntau yog ob kauj ruam: ua ntej, cov khoom siv yas yog ntxiv rau pwm; Tom qab ntawd, cov pwm rotates tsis tu ncua raws li ob lub voj voog perpendicular thaum raug cua sov. Nyob rau hauv lub zog ntawm lub ntiajteb txawj nqus thiab cua sov, cov khoom siv yas maj mam thiab sib npaug, yaj, thiab adheres rau tag nrho saum npoo ntawm pwm kab noj hniav, tsim cov duab xav tau.
Thaum lub sij hawm hloov molding, yuav tsum tau them nyiaj mloog mus rau lub rationality ntawm cov pwm tsim los xyuas kom meej uniform phab ntsa thickness thiab tsis txhob muaj kev nyuaj siab concentration. Cov pwm yuav tsum tau preheated rau qhov kub thiab txias ua ntej kev tsim kho kom tsis txhob muaj cov khoom siv raw adhesion. Ib txhij, cov cua kub thiab kev sib hloov ceev yuav tsum tau tswj nruj me ntsis kom ntseeg tau tias cov yas sib xws. Tom qab kev tsim kho, cov pwm yuav tsum tau muab ntxuav kom zoo thiab khaws cia kom ntev nws lub neej kev pab cuam.
