J107T
Description:
JQ.J107T is a low hydrogen sodium type low alloy high strength steel electrodes, using DC reverse, all-position welding. Deposited metal welding after quenched and tempered heat treatment (the quenching and tempering heat treatment using E-class heat treatment, namely immersion 900 ℃ quenching and tempering at a temperature above 500 ℃), can be excellent high strength and toughness of the mechanical properties fully meet Mechanical properties of E grade cast steel.
use:
Can be widely used in vehicle towing hooks, welding hooks, E-grade steel welding and other structures.
Deposited metal chemical composition (%)
| C | Mn | Si | S | P | Ni | Mo |
guarantee value | ≤0.08 | 1.50-2.00 | ≤0.50 | ≤0.030 | ≤0.035 | 4.00-5.00 | ≤1.00 |
Example value | 0.048 | 1.57 | 0.15 | 0.005 | 0.013 | 4.20 | 0.50 |
Deposited metal mechanical properties
Pilot projects | Rm (N / mm 2 ) | ReL / Rp 0.2 (N / mm 2 ) | A (%) | KV 2 (J) |
-40 ℃ |
guarantee value | ≥920 | ≥760 | ≥12 | ≥20 |
Example value | 940 | 810 | 18 | 35 |
Deposited metal diffusion hydrogen content:
≤5.0ml / 100g (chromatography or mercury method)
X-ray inspection:
I level
Reference current (DC + )
Electrode diameter (mm) | φ3.2 | φ4.0 | φ5.0 |
Welding current (A) | 90-120 | 140-180 | 170-210 |
Precautions:
1. Before welding electrodes to be 400 ℃ baking 1 hour, placed in 100 ~ 150 ℃ incubator, with the use of take.
2. Welder must be welded before the removal of rust, oil, water and other impurities.
3. Weld after welding quenched and tempered, the 900 ℃ water quenching and tempering air cooling 550 ℃.
related articles
The number of clicks:Update time:2017/12/27 15:52:38【print this page】