Humilis Alloy Steel Welding Electrode
J557SLA、 J557SLB
GB/T E5515-G
AWS E8015-G
Descriptio: Haec sodium hydrogenii humile speciali electrode ferro aluminizato obtectum est.Usus DCEP (electrode currente directo positivo), et in omnibus positionibus cum operatione arcus brevi coniungi potest.J557SLA immediate conflari potest sine strato aluminizato remoto in superficie rimam antequam glutino.Sed J557SLB iacuit aluminizatus in superficie rimam removere antequam glutino.
Applicatio: Ad glutino aluminizato adhibita compages ferri sub corrosione mediae hydrogenii sulfidei, sulphuris, ammoniaci, ammonium bicarbonatae et hydrogenii nitrogenii cum temperatura laborante infra 540°C.Ut tibiae boiler, instrumento expolitio petrolei, armorum stercorat et fistulae vaporis, etc.
Compositio chemica metallici solidi (%):
| C | Mn | Si | Cr | Mo | Al | S | P |
| ≤0.12 | 0.50 ~ 0.90 | ≤0.50 | ≈0.80 | ≥0.20 | ≤0.055 | ≤0.035 | ≤0.035 |
Mechanica metallorum congeries;
| Test item | Distrahentes fortitudo Mpa | Cedat imperium Mpa | Prolongatio % | Valorem impulsum (J) Normalis Temp. |
| guaranteed | ≥540 | ≥440 | ≥17 | ≥49 |
Diffusio hydrogenii contenti metalli depositi: ≤6.0mL/100g (glycerini methodus)
X-ray inspection: I gradus
Commendatur current:
| mm） Rod diam | 2.5 | 3.2 | 4.0 | 5.0 |
| A） Welding Current | 50~ 80 | 80~ 110 | 130 ~ 170 | 160 ~ 200 |
Animadverte:
1. Electrodum coquendum est per 1 horae circiter 350℃ ante operationem glutinum;
2. Essentiale est mundare ferruginem, squamam olei, aquam et immunditias in partibus glutino ante glutino.
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