Umahluko wentsebenzo kunye nemigibe yokubuyisela phakathi kweebholiti zokuqina kwebanga le-10.9 kunye nebanga le-12.9

Ukusuka kwezona zikhombisi zisisiseko zokusebenza komatshini, amandla okuzibamba okubizwa ngokuba yi-10.9 grade high-power bolts afikelela kwi-1000MPa, ngelixa amandla esivuno abalwa njenge-900MPa ngomlinganiselo wamandla esivuno (0.9). Oku kuthetha ukuba xa iphantsi kwamandla okuqina, awona mandla aphezulu anokumelana nebholithi isondele kwi-90% yamandla ayo okuphuka. Ngokwahlukileyo koko, amandla okuzinza okubizwa ngokuba yi-12.9 grade bolts anyusiwe aya kutsho kwi-1200MPa, kwaye amandla esivuno aphakame njenge-1080MPa, ebonisa ukuqina okuphezulu kunye nokuxhathisa isivuno. Nangona kunjalo, kuzo zonke iimeko, iibholiti zodidi oluphezulu zinokuthatha indawo yeebholithi zomgangatho ophantsi ngokungakhethiyo. Kukho iingqwalasela ezininzi ezibandakanyekayo emva koku:

1. Ukusebenza kweendleko: Nangona iibholiti eziphezulu zinentsebenzo ephezulu, iindleko zabo zokuvelisa nazo zinyuka ngokufanelekileyo. Kwiimeko apho iimfuno zamandla agqithisileyo zingekho mfuneko, ukusebenzisa iibholithi ezisezantsi kunokuba noqoqosho kunye nengqiqo.

2. Ukukhuselwa kwamacandelo axhasayo: Ngexesha lokuyila, ngokuqhelekileyo kukho ukuhlukana ngamabomu kumandla phakathi kweebholiti kunye namantongomane ukuze kuqinisekiswe ubomi obude kunye neendleko zokugcina eziphantsi ngexesha lokuchithwa kunye nokutshintshwa. Ukuba kufakwe endaweni yayo ngaphandle kwesizathu, inokuphazamisa le bhalansi kwaye ikhawulezise umonakalo wezinto ezincedisayo ezifana namantongomane.

3. Iimpembelelo ezikhethekileyo zenkqubo: Iinkqubo zonyango ze-Surface ezifana ne-galvanizing zinokuba nemiphumo emibi kwi-bolts ephezulu yamandla, njenge-hydrogen embrittlement, efuna ukuvavanywa ngokucokisekileyo xa ukhetha izisombululo ezizezinye.

4. Iimfuno zezinto eziphathekayo: Kwiindawo ezithile ezinemithwalo enzima etshintshanayo, ukuqina kweebholithi kubaluleke kakhulu. Ngeli xesha, ukutshintsha ngokungaboniyo iibholiti eziphezulu kunokukhokelela ekuqhekekeni kwangaphambili ngenxa yokungonelanga kwezinto eziphathekayo, eziye zanciphisa ukuthembeka kwesakhiwo sonke.

5. Indlela yokukhusela i-alam yokhuseleko: Kwezinye iinkqubo ezikhethekileyo, ezifana nezixhobo ze-brake, iibholithi kufuneka ziphuke phantsi kweemeko ezithile ukuze kuqalise indlela yokukhusela. Kule meko, naluphi na ukutshintshwa kunokukhokelela ekungaphumeleli kwemisebenzi yokhuseleko.

Isishwankathelo, kukho umehluko omkhulu kwiipropati zomatshini phakathi kweebhotshi eziphezulu zebanga le-10.9 kunye ne-12.9. Nangona kunjalo, kwizicelo ezibonakalayo, ukhetho lwabo kufuneka luqwalaselwe ngokubanzi ngokusekelwe kwiimfuno ezithile zemeko. Ukulandela ngokungaboniyo ukuqina okuphezulu akunako nje ukwandisa iindleko ezingeyomfuneko, kodwa kuzisa neengozi zokhuseleko. Kuyimfuneko ukuqonda ngokupheleleyo iimpawu zokusebenza kunye nokunciphisa ukusetyenziswa kweebholithi ezahlukeneyo, ukuqinisekisa ukuba iibholiti ezikhethiweyo zinokuhlangabezana neemfuno zokusebenza kunye nokuqinisekisa ukhuseleko nokuthembeka kwesakhiwo.