上海斯米克銀釬料基本知識釬焊溶劑：在焊接過程中，配合銀焊條共同使用，以保證釬焊過程順利進行和獲得嚴密的接頭，改善銀焊條對母材的潤濕作用，清除液體釬料和表面氧化物，使銀焊條和母材免于氧化。焊劑分為非腐蝕性焊劑和活性化焊劑，非腐蝕性焊劑有硼砂和硅酸等，活性化焊劑是在非腐蝕性焊劑中加入一定量的氟化鉀、氟化鈉或綠化鉀、綠化鈉�；钚曰竸┚哂泻軓姷那宄饘傺趸锖碗s物的作用，但對金屬有腐蝕作用，焊接完成后，焊接處殘留的焊劑和焊渣要進行清除。 3氣焊溶劑（簡稱助焊劑）：供氧-乙炔焰進行氣焊時的助焊劑，其作用是用以驅除焊接過程形成的氧化物，改善潤濕性能，并起精練作用，以獲得嚴密的焊縫組織。 二、釬焊工藝要求 1選用銀焊絲及焊劑在我們所認為的都是根據焊件材料來進行的。故提高了焊接縫金屬的抗裂性及耐腐蝕性能。 用途：用于相同類型的超低碳不銹鋼材料（如尿素合成塔襯里）及異種鋼焊接。上海斯米克銀釬料是指涂有以不銹鋼為源料的一類焊條�？煞譃殂t不銹鋼焊條和鉻鎳不銹鋼焊條，上海斯米克銀釬料廣泛應用于化工、化肥、石油、醫療機械制造等行業。 性能要求: 上海斯米克銀釬料除了要滿足一般焊接工藝性能和焊接接頭力學性能外，藥芯焊絲還要確保焊接接頭能滿足一定的耐蝕性的要求。對藥皮和焊芯，上海斯米克銀釬料通常都要考慮到下列要求： 1)通過焊芯和藥皮過渡各種合金元素，藥芯焊絲和手工焊條那個強度大上海斯米克銀釬料使焊縫金屬成為含有確定數量的奧氏體和鐵素體組織，以確保焊縫金屬既有良好的抗裂性，不銹鋼焊條又有良好的抗相應介質腐蝕的能力。
上海斯米克銀釬料基本知識焊絲端頭與熔池接觸，并與火焰一起沿焊縫移動，焊炬不作橫向擺動，焊速要快，并盡量避免中斷。預熱與層間溫度：低溫環境下的預熱溫度應稍高于常溫下的鈷基焊條焊接鋼結構預熱溫度，加熱區域為構件焊接區各方向大于或等于二倍鋼板厚度且不小于100毫米范圍內的母材，焊接層間溫度不低于預熱溫度或標準（JGJ81-2002）規定的最低溫度20℃(兩者取高值)加大定位焊時的熱輸入：適當加大定位焊的熱輸入，增大焊縫截面和長度，并采用與正式焊接相同的預熱條件，不在坡口以外的母材上打弧，熄弧時弧坑一定要填滿，可以有效減少由于定位焊接引起的收縮裂紋.焊絲生產效率高、成分調節靈活、電弧穩定、焊接飛濺小和全位置焊接工藝性能良好，所以子啊焊材中的地位越來越重要，有逐漸取代手工電焊條和實芯焊絲的趨勢。安全衛生制造/生產過程中如何不使碳化鉻耐磨板堆焊藥芯焊絲內因管制不良而造成部分線材形成中空是耐磨板堆焊焊絲生產品質的關鍵。
|
Category |
Trade-mark |
Specification |
Melting |
Chemical |
Application
|
Equivalent |
|
Copper 銅鋅 |
L103 |
Wire & rod |
885-888 |
Cu54 Zn Rem. |
Brazing of copper, bronze and steel, subjected to low
load. |
|
|
L104 |
Foil |
890-930 |
Cu57 Mn2 |
Brazing of
carbide cutting tool. |
|
|
|
Copper
銅磷 |
L201 |
Cast rod, wire
& rod, powder |
710-800 |
P7 Cu Rem. |
Brazing of
copper and copper alloys. |
BCuP-2 |
|
L204 |
Cast rod, wire |
640-815 |
P5 Ag15 |
Brazing of copper, copper alloys, silver and molybdenum
etc. |
BCuP-5 |
|
|
L205 |
Cast rod, wire
& rod, powder |
640-800 |
P6 Ag5 |
Brazing of
copper and copper alloys. |
BCuP-3 |
|
|
L207 |
Cast rod, wire & rod |
640-770 |
P7 Ag5 |
Brazing of copper and copper alloys. |
BCuP-7 |
|
|
L209 |
Cast rod, wire |
684-710 |
P7 Ag2 |
Brazing of
copper and copper alloys. |
BCuP-6 |
|
|
Silver
銀基 |
L302 |
Wire & rod |
745-775 |
Ag25 Cu40 |
Brazing of copper, copper alloys, steel and stainless
steel etc. |
|
|
L303 |
Wire & rod |
660-725 |
Ag45 Cu30 |
Brazing of copper, copper alloys, steel and stainless
steel etc. |
BAg-5 |
|
|
L303F |
Flux coated rod |
660-725 |
Ag45 Cu30 |
L303 coated
with flux, the same application as L303. |
BAg-5 |
|
|
L304 |
Foil |
690-775 |
Ag50 Cu34 |
Brazing of copper, copper alloys and steel etc. |
BAg-6 |
|
|
L308 |
Wire & rod |
779-780 |
Ag72 Cu Rem. |
Brazing of copper and nickel under vacuum or reducing
protective atmosphere. |
BAg-8 |
|
|
L312 |
Wire & rod |
595-605 |
Ag40.Cu.Zn.Cd |
Brazing of copper, copper alloys, steel and stainless
steel etc. |
|
|
|
L313 |
Wire & rod |
625-635 |
Ag50.Cu.Zn.Cd |
Brazing of copper, copper alloys, steel and stainless
steel etc. |
BAg-1a |
|
|
L321 |
Wire & rod 絲 |
615-650 |
Ag56.Cu.Zn.Sn |
Brazing of copper, copper alloys, steel and stainless
steel etc. |
BAg-7 |
|
|
L323 |
Wire & rod |
665-755 |
Ag30.Cu.Zn.Sn |
Brazing of copper, copper alloys, steel and stainless
steel etc. |
|
|
|
L325 |
Wire & rod |
645-685 |
Ag45.Cu.Zn.Sn |
Brazing of copper, copper alloys, steel and stainless
steel etc. |
BAg-36 |
|
|
L326 |
Wire & rod |
650-720 |
Ag38.Cu.Zn.Sn |
Brazing of copper, copper alloys, steel and stainless
steel etc. |
BAg-34 |
|
|
Aluminum base 鋁基 |
L400 |
Cast rod, wire & rod |
577-582 |
Si11.5 |
Brazing of aluminum and aluminum alloys. |
BAlSi-4 |
|
L401 |
Cast rod |
525-535 |
Si5 Cu28 |
Brazing of aluminum and aluminum alloys. |
|
|
|
Tin lead 錫鉛 |
L600 |
Wire & rod |
183-185 |
Sn60 Sb≤0.8 |
Soldering of fusible metals and heat-treated part. |
60Sn |
|
L601 |
Wire & rod |
183-227 |
Sn18 Sb2 |
Soldering of copper, copper alloys and galvanized iron
plain sheet. |
18Sn |
|
|
L602 |
Wire & rod |
183-256 |
Sn30 Sb2 |
Soldering of copper, brass, copper alloys and
galvanized iron plain sheet. |
30Sn |
|
|
L603 |
Wire & rod |
183-235 |
Sn40 Sb2 |
Soldering of copper, copper alloys, steel and zinc
parts. |
40Sn |
|
|
L604 |
Wire & rod |
183-222 |
Sn90 Sb≤0.15 |
Soldering of copper and steel for food and medicine
field. |
90Sn |
|
|
L605 |
Wire & rod |
232-240 |
Ag5 Sn95 |
Soldering of copper and steel for electrical and food
field. |
|
|
|
L608 |
Wire & rod |
295-305 |
Sn5.5 Ag2.5 |
Soldering of copper, copper alloys, steel and stainless
steel. |
|
|
|
Nickel base 鎳基 |
L702 |
Powder |
970-1000 |
Cr7 B3 Si4 |
Brazing of stainless steel under vacuum or protective
atmosphere. |
BNi-2
|