Tolerance ntawm flatness

Lub unflatness hla lub sawb (tseem hu ua cross camber thiab cross hneev) yog qhia raws li feem pua ntawm cov sawb dav. Lub unflatness raws lub sawb, qee zaum hu ua coil-set, kuj tau qhia tias feem pua. Tshwj tsis yog tias pom zoo raws li qhov ntsuas qhov ntev = qhov dav strip rau flatness ntsuas raws thiab hla lub strip. Kev cuam tshuam ntawm cov kev ntxhov siab uas yuav tshwm sim los ntawm kev txiav yuav raug cais tawm.

Ua siab ntev		Qhov siab tshaj qhov tso cai sib txawv (% ntawm nominal strip dav)
P0		-
P1		0.4
P2		0.3
P3		0.2
P4		0.1
P5		Raws li tus neeg siv khoom tshwj xeeb xav tau

Chav kawm kam rau ua	Sawb dav
	8 - (20) hli		20 - (50) hli		50 - (125) hli		125mm~
	Ntsuas qhov ntev
	1m	3m	1m	3m	1m	3m	1m	3m
	Maximum pub ncaj sib txawv (mm)
R1	5	45	3.5	31.5	2.5	22.5	2	18
R2	2	18	1.5	13.5	1.25	11.3	1	9
R3	1.5	13.5	1	9	0.8	7.2	0.5	4.5
R4	1	9	0.7	6.3	0.5	4.5	0.3	2.7
R5	Raws li tus neeg siv khoom tshwj xeeb xav tau