ASTM A325 Vs A490: Inyobora yo guhitamwo amabouti y'imibumbe ku bahinga

Ivyuma bikomeye cane-bifise uruhara runini mu kwubaka ivyuma. Mu ngingo mfatirwako zitomoye cane harimwo .ASTM A325kandiASTM A490. Naho ivyo vyose bigenewe gufatanya ivyuma, biratandukanye mu bijanye n’ubuhinga, ukuntu bihuye n’ivyo bipfutse be n’ingene bikoreshwa. Guhitamwo urugero rwiza rw’amabouti biragira ingaruka zitaziguye ku mutekano w’imibumbe, ku kwubahiriza, no ku bijanye n’ugukoresha neza igiciro c’umugambi.

 

Iyi nkuru itanga ukugereranya gutomoye kw’ubuhinga kugira ngo ifashe abahinga n’imigwi y’abaguzi gufata ingingo zishingiye ku makuru.

 

 

 

ASTM A325 na ASTM A490 ni amabouti y’imibumbe akomeye cane-akoreshwa cane cane mu guhuza ivyuma-ku-vyuma nk’inyubakwa, ibiraro, iminara, n’inyubako zikomeye z’inganda.

 

ASTM A325 bolts zikozwe mu cuma c’umuyagankuba kiri hagati, mu bisanzwe zizimwa kandi zigakomera kugira ngo zishike ku nkomezi nyinshi z’ugukomera zibereye ibikorwa vyinshi vy’imibumbe.

 

ASTM A490 bolts zikozwe mu cuma c’ivyuma n’ubushuhe-buvuwe kugira ngo zishike ku rwego rwo hejuru cane rw’inkomezi. Mu bisanzwe zikoreshwa mu bikorwa aho ivyipfuzo vy’umuzigo birenze ubushobozi bw’amabouti ya A325.

 

Ivyo bipimo vyose bishirwa mu bihuza vy'ubwoko bwa slip-critical canke bearing- kandi bishirwa ku bisabwa vy'imbere y'ugushiramwo.

 

 

Itandukaniro ry’ubuhinga ry’intango hagati y’amabouti ya A325 na A490 riri mu bushobozi bw’inkomezi.

 

Umutungo	ASTM A325	ASTM A490
Ubwoko bw'ibikoresho	Icuma c'ikariboni gisanzwe	Icuma gikozwe mu cuma
Inkomezi nkeya zo gukwega	120 ksi	150 ksi
Inkomezi z'umwimbu mutoyi	92 ksi	130 ksi
Ubukomezi (HRC)	24–35	33–39
Ikoreshwa risanzwe	Icuma c'imibumbe gisanzwe	Ihuza ry'imiterere ry'umuzigo munini -

 

Inkomezi zirushirije za A490 zituma haba ubushobozi bwo gutwara ibintu vyinshi canke ugabanura umubare w’amabouti mu migero imwimwe. Ariko rero, inkomezi nyinshi zisobanura kandi kugabanya ubushobozi bwo gukomera be n’ibisabwa bikomeye vyo kugenzura ugushirwaho.

 

Ku nyubakwa nyinshi z’ubudandaji n’ivyuma bimenyerewe, A325 iraguma ihagije. A490 muri rusangi igaragazwa igihe imibare y’imibumbe isaba ubushobozi bwo guhangana n’umuzigo mwinshi.

 

 

Igihe co gukoresha ASTM A325

 

A325 amabouti akoreshwa cane muri:

* Inyubakwa z'ivyuma z'ubudandaji n'iz'inganda

* Ibiraro vy'amabarabara manini

* Ububiko n'ibibanza vyo gukwiragiza

* Amahuza rusangi y'icuma

 

Bitanga uruvange ruringaniye rw'inkomezi, ukuboneka, n'igiciro-ubushobozi. Ku migambi idafise ibibazo vy’ugutwara ibintu bikomeye cane, amabouti ya A325 arahuye neza n’ibisabwa mu bijanye n’imiterere.

 

Igihe co gukoresha ASTM A490

 

A490 amabouti agaragara muri:

* Imibumbe myinshi -

* Ibiraro vy'uburebure burebure-

* Amahuza y'umunara w'umuyaga

* Inganda zikomeye canke ibikorwa vy'inguvu

 

Muri ivyo bihe, ubushobozi bwo gukorana mu gihe c’inguvu nyinshi z’ugukomera n’ugukemurwa biratuma hakoreshwa A490.

 

Abahinga bategerezwa kumenya neza uburyo bwo kugenzura umuvuduko n’ugushiraho, kuko amabouti afise inkomezi nyinshi-ashobora gushikirwa n’ingorane zidakomeye.

 

 

Uguhuza kw’imiti yo hejuru ni ikintu gikomeye gitandukanya izo nzira zibiri.

 

ASTM A325 amabouti asanzwe aboneka muri:

* Guheza neza

* Gupfuka zinc

* Gutera ivyuma bishushe-

 

Hot-dip galvanizing yemerwa cane ku ma bouti ya A325, bikaba bituma ashobora gukoreshwa hanze no mu bidukikije bishobora gusenyuka.

 

ASTM A490 amabouti, kubera ubukomezi bwayo bwinshi, muri rusangi niNtivyiza gukoreshwa mu gutera ivyuma bishushe-kubera ingorane zishobora guterwa n’ugusenyuka kw’iyi hydrogène. Akenshi zitangwa mu buryo busanzwe canke bushizweko amabara y’amashini aho kubitanga.

 

Ku migambi yo mu turere two ku nkengera y’ikiyaga canke dufise ubukonje bwinshi, iyo ntandukaniro iragira ico ikoze cane ku guhitamwo amanota.

 

 

A490 bolts zirazimvye cane kubera ibikoresho vy’ivyuma n’ibisabwa vyo gutunganya inkomezi nyinshi. Naho zitanga ubushobozi bwo kwikorera burengeye ubw’abandi, si zo zihita zihitamwo neza.

 

Gukoresha A490 mu bikorwa aho A325 ihagije mu mibumbe birongereza igiciro c’umugambi ata nyungu ingana n’iyo. Isesengura ryiza ry’imiterere ry’ibintu rikwiye kwerekana nimba inkomezi z’inyongera zikenewe.

 

Amashirahamwe y’abaguzi akwiye guhuza uguhitamwo igitigiri c’amabouti n’imibare y’ubuhinga aho gushingira ku bintu vy’agaciro kuruta.

 

 

Igihe ufata ingingo hagati y’amabuye ya ASTM A325 na A490, zirikana:

 

1. Ibisabwa vyo guhingura umuzigo

2. Ubwoko bw'ihuriro (ugutwara vs gunyerera-bikomeye)

3. Gushikirwa n'ibidukikije n'ingorane zo gusenyuka

4. Uguhuza kw'ubuvuzi bwo ku ruhande

5. Intambamyi z'ingengo y'imari n'ukuboneka

 

Guhuza ibikorwa hagati y’abahinga mu vy’imibumbe n’abagurisha ibikoresho vyo gufatanya ibintu bituma habaho kwubahiriza ingingo ngenderwako za ASTM mu gihe bituma igiciro n’ubushobozi bigenda neza.

 

 

 

Ivyo bikoresho vyose ASTM A325 na ASTM A490 birafise uruhara runini mu kwubaka ivyuma vy’imibumbe. Ihitamwo ryiza rivana n’ivyo bisabwa kugira ngo umuntu akoreshe umuzigo, uko ibidukikije vyifashe, be n’ivyo umugambi uvuga.

 

A325 itanga ubushobozi bwo kwizigirwa ku bikorwa vyinshi vy’imibumbe n’uguhinduranya gupfuka. A490 itanga inkomezi nyinshi ku bidukikije vy’ubuhinga bisaba ariko bisaba gushirwaho bikomeye no kwitwararika gucungera uburozi.

 

Gusuzuma neza ibisabwa mu mibumbe bituma habaho uguhitamwo neza, kwubahiriza amategeko, no ku giciro-.