關于熱鍍鋅板的相關知識

1、主要用途

熱鍍(du)鋅板(ban)的(de)主要用于汽車、家電、建筑、機械(xie)、電子、輕工等行業。

2、鋼廠鍍鋅分類

鋼廠(chang)(chang)出廠(chang)(chang)的鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)(xin)產品有電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)(xin)、熱(re)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)(xin)兩類(lei)方法，而這兩類(lei)又再做細分(fen)(fen)(fen)，電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)(xin)中從鋅(xin)(xin)(xin)(xin)(xin)(xin)(xin)層厚度上分(fen)(fen)(fen)為(wei)單(dan)面、雙面和(he)(he)差厚鍍(du)(du)(du)(du)層三類(lei)，而熱(re)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)(xin)則(ze)沒有單(dan)面和(he)(he)差厚鍍(du)(du)(du)(du)層，但熱(re)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)(xin)又分(fen)(fen)(fen)為(wei)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)(xin)和(he)(he)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)(xin)鐵(tie)合金(jin)，電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)則(ze)沒有鋅(xin)(xin)(xin)(xin)(xin)(xin)(xin)鐵(tie)合金(jin)。鍍(du)(du)(du)(du)層種類(lei)上電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)的鍍(du)(du)(du)(du)層又延伸為(wei)電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)(xin)、電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)(xin)鎳、電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)錫、電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)鉻，熱(re)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)(xin)的延伸則(ze)更多，其中有熱(re)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)(xin)、鋅(xin)(xin)(xin)(xin)(xin)(xin)(xin)鐵(tie)、鋁(lv)鋅(xin)(xin)(xin)(xin)(xin)(xin)(xin)、鋅(xin)(xin)(xin)(xin)(xin)(xin)(xin)鋁(lv)、和(he)(he)鋅(xin)(xin)(xin)(xin)(xin)(xin)(xin)鋁(lv)鎂(mei)等。

3、退火方式

常規冷軋(ya)涂鍍(du)產品(pin)的退(tui)火(huo)方法為(wei)連退(tui)和罩退(tui)兩種(zhong)類型(xing)。

4、常用鋼種

產品種類(lei)：一般商(shang)品卷(CQ)，深(shen)沖熱鍍鋅(xin)板(ban)(ban)(DQ)、超深(shen)沖熱鍍鋅(xin)板(ban)(ban)(DDQ-EDDQ/SEDDQ)，結構用鍍鋅(xin)板(ban)(ban)(HSLA)，烘烤硬化(hua)熱鍍鋅(xin)板(ban)(ban)(BH)，雙相鋼(gang)(DP)，TRIP鋼(gang)(相變誘導塑性鋼(gang))等，復相鋼(gang)（CP）等。

5、熱鍍鋅的缺陷

鋅層脫落、劃傷(shang)、鈍化斑、鋅粒(li)、厚邊(bian)、氣(qi)刀條痕(hen)(hen)、氣(qi)刀刮(gua)痕(hen)(hen)、露鋼(gang)、夾雜、機(ji)械(xie)損(sun)傷(shang)、鋼(gang)基性能不(bu)良、浪邊(bian)、瓢曲、尺寸不(bu)合、壓印(yin)、鋅層厚度不(bu)合、輥(gun)印(yin)等。

6、鋅層脫落的主要原因

鋅層脫落的主要原(yuan)(yuan)因有原(yuan)(yuan)材(cai)料生產原(yuan)(yuan)因和加工不(bu)(bu)(bu)匹配等(deng)原(yuan)(yuan)因。原(yuan)(yuan)材(cai)料因有表(biao)面氧(yang)(yang)化、硅化合(he)物、NOF段(duan)氧(yang)(yang)化氣(qi)(qi)氛及保護(hu)氣(qi)(qi)體露(lu)點太(tai)高、空燃比不(bu)(bu)(bu)合(he)理、氫氣(qi)(qi)流(liu)量偏低(di)、爐(lu)子有氧(yang)(yang)滲(shen)入，帶(dai)鋼入鍋溫(wen)度(du)偏低(di)，NOF段(duan)爐(lu)溫(wen)偏低(di)，油脂蒸發(fa)不(bu)(bu)(bu)盡、鋅鍋鋁含量偏低(di)、機組速度(du)太(tai)快、還原(yuan)(yuan)不(bu)(bu)(bu)充分(fen)、鋅液中(zhong)停(ting)留時(shi)間太(tai)短、鍍層偏厚(hou)。加工不(bu)(bu)(bu)匹配有折彎半徑不(bu)(bu)(bu)符、模具(ju)磨損、刮蹭、模具(ju)間隙(xi)過大(da)或過小(xiao)、沖壓潤滑油少、模具(ju)工作時(shi)間超長未修磨維護(hu)等(deng)。