Heerka Ruuxa ee Birlabta ah ee Aluminium

Heerka baarka waa heer ay si caadi ah u isticmaalaan shaqaalaha kursiga keydka. Heerka baarka waa sax marka la eego isbarbardhigga u dhexeeya diyaaradda hoose ee qaabka V-qaabaysan sida diyaaradda shaqada iyo heerka barbar socda diyaaradda shaqada. Marka heerka hoose ee cabbirka heerka la dhigo meel toosan oo sax ah, xumbo ku jira cabbirka heerka waxay ku jiraan bartamaha (booska toosan). Labada dhinac ee xariiqda eber ee lagu calaamadeeyay labada daraf ee xumbo ee tuubada galaaska ee heerka, miisaan aan ka yarayn 8 qaybood ayaa la calaamadeeyaa, farqiga u dhexeeya calaamadahana waa 2mm. Marka heerka hoose ee heerka uu wax yar ka duwan yahay booska toosan, taas oo ah, marka labada daraf ee heerka hoose ee heerka ay yihiin kuwo sare iyo kuwo hooseeya, xumbo ku jira heerka had iyo jeer waxay u guuraan dhinaca ugu sarreeya ee heerka sababtoo ah cufisjiidadka, kaas oo ah mabda'a heerka. Marka dhererka labada daraf uu isku mid yahay, dhaqdhaqaaqa xumbo ma badna. Marka farqiga dhererka ee u dhexeeya labada daraf uu weyn yahay, dhaqdhaqaaqa xumbo sidoo kale waa weyn yahay. Farqiga u dhexeeya dhererka labada daraf waxaa lagu akhrin karaa cabbirka heerka.

Taxaddarrada marka la isticmaalayo heerka:
1. Kahor cabbiraadda, dusha cabbirka waa in si taxaddar leh loo nadiifiyaa oo la qalajiyaa, dusha cabbirkana waa in laga hubiyaa xoqid, miridhku, burrs iyo cillado kale.

2. Kahor cabbiraadda, hubi in booska eber uu sax yahay iyo in kale. Haddii kale, hagaaji heerka la hagaajin karo oo hagaaji heerka go'an.

3. Inta lagu jiro cabbiraadda, iska ilaali saameynta heerkulka. Dareeraha ku jira heerka wuxuu saameyn weyn ku leeyahay heerkulka. Sidaa darteed, fiiro gaar ah u yeelo saameynta kulaylka gacanta, iftiinka qorraxda tooska ah, iyo gaaska heerka.

4. Marka la isticmaalayo, akhrinta waa in lagu qaataa booska heerka toosan si loo yareeyo saameynta parallax ee natiijooyinka cabbirka.