Ibikoresho vyo gukingira amavalve ni igice gihambaye mu gukingira amavalve. Ni ibihe bikoresho vyo gukingira amavalve? Turazi ko ibikoresho vy’impeta y’ugukingira amavalve bigabanywemwo ibice bibiri: ivyuma n’ibitari ivyuma. Ibi bikurikira ni intangamarara ngufi y’ingene ibikoresho bitandukanye vyo gukingira bikoreshwa, be n’ubwoko bw’ibikoresho bikoreshwa cane.
1. Igipimo c'ivyuma
Ivyiza vyose vy’imipira y’ibinyabuzima nk’ukudashobora guhangana n’amavuta, ubushuhe n’ukudashobora gusenyuka ni vyiza kuruta ivy’imipira y’ibinyabuzima. Muri rusangi, ubushuhe bwo gukoresha imipira y’ibinyabuzima ni t≤150°C, kandi ubushuhe bw’imipira y’ibimera ni t≤60°C.Imipira ikoreshwa mu gukingira amavalve y’umupira,umupira w'irembo wicaye, amavalve y'umubiri,rUbber yicaye ku kinyugunyugu, rubber yicaye kuzunguruka umuvuduko wo gusuzuma (gusuzuma ama valve), amavalve y’ugupfuka n’ayandi mavalve afise umuvuduko w’izina PN≤1MPa.
2. Nylon
Nylon ifise ibiranga umubare muto w’ugushikana n’ubushobozi bwiza bwo guhangana n’ugusenyuka. Nylon ikoreshwa cane cane ku bikoresho vy’umupira n’ibikoresho vy’umupira bifise ubushuhe t≤90°C n’umuvuduko w’izina PN≤32MPa.
3. PTFE
PTFE ikoreshwa cane cane ku ma valve y’umubumbe,amavalve y'irembo, amavalve y’umupira, n’ibindi bifise ubushuhe t≤232°C n’umuvuduko w’izina PN≤6.4MPa.
4. Icuma gicuzwe
Ivyuma bikoreshwa muumuvuduko w'irembo, umupfunda w’umubumbe, umupfunda w’umupira, n’ibindi ku bushuhe t≤100°C, umuvuduko w’izina PN≤1.6MPa, gazi n’amavuta.
5. Icuma ca Babbitt
Babbitt alloy ikoreshwa ku nzira y’umubumbe w’amazi y’amazi n’ubushuhe t-70 ~ 150 ° C n’umuvuduko w’izina PN≤ 2.5 MPa.
6. Umuringa
Ibikoresho bisanzwe vyo gukoresha mu gukora ivyuma vy’umuringa ni umuringa w’ibiti 6-6-3 n’umuringa w’ibiti 58-2-2. Igikoresho c’umuringa gifise ubushobozi bwo guhangana n’ugusambuka kandi kirabereye amazi n’umwotsi bifise ubushuhe t≤200°C n’umuvuduko w’izina PN≤1.6MPa. Akenshi rikoreshwa mu .amavalve y'irembo, amavalve y'umubumbe,gusuzuma ama valve, amavalve y’ivyuma, n’ibindi.
7. Icuma kitagira ibara
Ivyuma bikoreshwa cane ni 2Cr13 na 3Cr13, vyazimye kandi birakomera, kandi bifise ubushobozi bwo guhangana n’ugusenyuka. Ikoreshwa kenshi mu bikoresho vy’amazi nk’amazi, umwotsi na peteroli bifise ubushuhe t≤450°C n’umuvuduko w’izina PN≤32MPa.
8. Icuma kitagira ibara c'ikiromu-nikeli-titaniyumu
Igitigiri gikoreshwa cane c’icuma kitagira ibara c’ivyuma vyitwa chromium-nickel-titanium ni 1Cr18Ni9ti, gifise ubushobozi bwo guhangana n’ugusenyuka, ubushobozi bwo guhangana n’ugusenyuka n’ubushuhe. Ni vyiza ku mwuka, aside nitrique n’ibindi bikoresho bifise ubushuhe t≤600°C n’umuvuduko w’izina PN≤6.4MPa, bikoreshwa ku nzira y’umupira, umupira w’amaguru, n’ibindi.
9. Icuma gifise nitride
Igitigiri gikoreshwa cane c’icuma gifise nitride ni 38CrMoAlA, gifise ubushobozi bwiza bwo guhangana n’ugusenyuka no guhangana n’ugukomeretswa inyuma yo gutera carburizing. Ikoreshwa cane mu nzira y’irembo ry’ibarabara ry’amashanyarazi rifise ubushuhe t≤540°C n’umuvuduko w’izina PN≤10MPa.
10. Gutera uburoni
Boronizing directement itunganya ahantu h’ugukingira kuva ku bikoresho vy’umubiri w’ivyuma canke umubiri w’idisiki, hanyuma igakora boronizing ahantu h’ugukingira, ahantu h’ugukingira harafise ubushobozi bwiza bwo guhangana n’ugusambuka. Ikoreshwa mu bikoresho vy’amashanyarazi.
Igihe co gutangaza: Ruheshi-10-2022
