Precision Casting Of Railway Parts
Railway parts casting is one branch of carbon steel precision casting, which is widely used in railway markets. Precision casting of railway parts adopts lost wax casting, also called investment casting.
In wax pattern process,we mix stearic acid and paraffin wax. In wax pattern making, as you know, it is better than polyethylene, and the wax deformation is small. In dipping slurry process,most of the suppliers adopt water glass technics in domestic area,but we adopt compound technics or silica sol technics. As you know, carbon steel castings will be much smoother with compound technics (compound of water glass and silica sol technics),this method is so popular with our customers, and the quality is higher than water glass technics, the cost is lower than silica sol technics.
In shell making,we adopt automatic sand-covering production line, which was invented under the guidance of our general manager.The indoor temperature was controlled by air-conditions,keeping the temperature at 24℃±1℃, which can make the castings much more stable,the internal tissues much more well-proportioned.
Our railway parts as precision casting products have quality assurance in accordance with ISO9001: 2008, strict material inspection and exact dimension control, with 100% quality control. OEM order is welcome. The parts can be made completely based on your specifications such as drawing, design, sample etc.
Technical Parameter
Precision Casting Of Railway Parts,Investment Castings for Railway Parts,Railway Parts Precision Casts,Steel Cast for Railway Part Wei fang junlong precision casting Co.,Ltd , https://www.junlongcasting.com
Surface Roughness: Ra 12.5
Machining Tolerance:+/-0.01 mm
Certification: ISO 9001:2008
Standard: ASTM. AISI. DIN. BS. JIS. NF
Heat Treatment: Quench and Temper by 2 sets box type furnaces
Inspection: Mt/Ut/Rt/100% Visual+100% Gage/CMM
Dimensions: OEM Customized/Customer's Drawing
Tolerance: as drawing
Trademark: JL
Package: Fumigation-free wooden case
Specification: Precision casting
Weight: 0.5-50(kgs)
The basic requirements for open mining for blasting work are:
First, there is enough blasting stock to ensure the continuous operation of the loading and unloading work.
Second, there must be reasonable ore rock mass, and the blockiness after blasting should meet the block requirements of subsequent work.
Third, there must be a regular explosion and steps, the explosion is too high, it will affect the safe operation of the excavator; the explosion is too low, affecting the efficiency of the installation, the explosion before the explosion is too large, so that the amount of cleaning is increased, the transportation line Also affected, the former rushing too small, indicating that the ore is not good. Therefore, the height and width of the pile should be appropriate. After the blasting, the working surface of the step should also be regular, and it is not allowed to have unevenness such as roots and umbrellas.
Fourth, we must be safe and economic. In the blasting design, the damage of the surrounding equipment, personnel and buildings should be fully considered to ensure the safety of the operation and the blasting should be economical and reasonable.