The steel strip surface is treated with ultrasonic washing, rinsing, drying to remove the dirt and grease adhered on the surface
PRODUCTION LINE OF FLUX-CORED WIRE
Flux-cored wire is the fourth generation of advanced welding material which is developed in recent years. Compared with other welding materials, the flux-cored wire has the following advantages: high efficiency, excellent technology, little spatter, high welding quality, and convenient for automation. It is widely used in industrial developed countries.
Manufacturing techniques of the flux-cored wire are:
1. Primary techniques mainly include roll forming of steel stripe, drawing, and sinking.
2. Rolling and sinking techniques are the primary. Drawing technique is used to adjust the diameter and ovality of the welding wire (applicable for the production of flux-cored wire, such as stainless steel with high fill rate and hard facing). The former is a mature manufacturing technique while the latter simply depends on roll forming and sinking. Some techniques are not perfect, and improving the production capacity encounters difficulties. Therefore, the production line of cold rolling and drawing of steel strip is the appropriate. According to requirements of the market, the company has developed flux-cored wire production lines for marine, steel structures, hard facing, and stainless steel to meet requirements of customers.
Flux-cored wire production line is composed of:
1. Steel strip pay-off and take-up machine: Pay off the strip→ (welding) → dancer →steel strip take up (φ630~800 bobbin stripe take-up machine);
2. Preparation: Damping stripe pay-off machine → ultrasonic wave washing and rinsing machine→ Drying machine
3. Roll forming machine: roll into U type + power delivery device + roll into O type;
4. Rough drawing unit: 560 take-up machine;
5. Fine drawing machine: Bobbin pay-off machine Automatic damping dancer → 400 straight-line drawing machine →Dancer →Polishing machine→ Driving machine →bobbin take-up machine (φ630~800 bobbin wire take-up machine);
6. : automatic wire pay-off machine with constant tension controlled by inverter → Dancer → wire layer winding machine;
The production line is applicable for the flux-cored welding wire. Diameter of the finished product: 0.8 ~ 2.0.
PREPARATION LINES
The steel strip surface is treated with ultrasonic washing, rinsing, and drying to remove the dirt and grease adhered on the surface. The surface is dried by induction heating device for the subsequent handling.
(1). ULTRASONIC WASHING TECHNIQUE
Washing object steel strip thickness 0.8~1.2mm,width 18mm Max
Washing purpose Removal of oil and grease
Washing technique Remove the oil stain or other dirt on the steel strip surface by the cavitation and emulsification functions of the ultrasonic wave
Washing media water base washing liquid
Washing speed 0~2m/s
Power of ultrasonic wave1800W 220V/50HZ
Heating power 6000W
Heating temperature:40~50
Function: Under the control of temperature controller ,the heater will heat the washing liquid to the temperature of 40~50 and keep the temperature constant to enable the ultrasonic wave to function ultimately. The dirt on the steel strip surface will be washed away by the ultrasonic wave.
(2).RINSING TECHNIQUE
Purpose: Remove the dirt and washing liquid on the steel strip surface by rinsing .
Rinsing media: tap water
Heating power:4000W
Heating temperature:>70
Rinsing speed: 0~2m/s
Effective dimension of rinsing tank : 1000*300*1016 (length*width*height)
Instruction: Under the control of temperature controller, the heater will heat the washing liquid to the temperature higher than 70.The dirt and washing liquid on the steel strip surface will be washed away by rinsing.
(3).INDUCTION DRYING TECHNIQUE
Purpose: The washed and rinsed steel strip will be dried by temperature controller.
Heating device : induction heating ring
Heating power: 11KW
Heating temperature: automatically controlled according to the line speed
Heating speed: 0~2m/s
Outer dimension of drying Box: 800mm*300mm*1200mm (length*width*height)
