Okulaba ekyuma ekikendeeza payipu .

Tube necking ye nkola y’okubumba ekendeeza ku dayamita y’enkomerero ya tube blank. ekibangirizi kya ttanka kiyingira mu kitundu ky’okukyukakyuka wansi w’ekikolwa ky’amaanyi ag’ekyekulungirivu, era ne kivaamu okukyukakyuka kw’obuveera bwa tangential mu kitundu ky’okukyukakyuka, olwo ne kiyingira mu kitundu ekinywevu, era ku nkomerero ne kikola dayamita y’enkomerero ekendeezeddwa.
Tube flaring is a forming process that expands the diameter of the end of the tube blank. The flaring shape can be conical or cylindrical. The tube blank enters the deformation zone under the action of axial force, and produces the flaring plastic deformation of tangential tension in the deformation zone, then enters the stable deformation zone, and finally forms.
Nga oteeka vvaalu ya throttle eya tubular ku circuit ya ssiringi enkulu, sipiidi y’okukola eya ssiringi enkulu esobola okutereezebwa; Valiva ekebera amazzi eteekeddwa waggulu esengekeddwa ku nkulungo ya ssilindala enyweza okukakasa nti ekibumbe tekiba kiyidde mu kiseera ky’okusiba; Siliinda y’okusengulwa, ssilindala ekoma n’enkulungo za ssilindala eziteekebwa mu kifo (axial positioning cylinder circuits) zirina vvaalu za throttle ez’engeri bbiri eziteekeddwa waggulu, eziyinza okutereeza sipiidi y’okutambula kw’amakubo abiri eza ssilindala ezo waggulu. Siliinda ya ssigiriimu ya ssifiili ne ssiringi y’amafuta ekoma ku mutindo gwa nnyindo n’omutindo gw’okukyusaamu, n’ekola ku mutindo gwa payipu n’egukola ku mutindo gwa payipu n’egukola ku mutindo gwa payipu n’egukola ku mutindo gwa payipu n’egukola ku mutindo gwa payipu.