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A professional manufacturer of ferrous metal casting parts.Using resin sand casting process, lost foam casting process, lost wax casting process together with advanced CNC machining ability, it mainly produces: Ductile Iron Casting,High Managese Steel Casting,Ductile Iron Pipe, Ductile Iron Pipe Fittings, Electric Power Fittings,alloy iron casting, automotive parts and so on
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Casting parts of general technical requirements

A, material requirements. Mainly include hardness, tensile strength, elongation, impact toughness.

 

Second, the dimensional accuracy, form and position accuracy. Different castings have different requirements, different size and geometric tolerance standard and different tolerance levels.

 

Third, according to the instructions for use, inspection and acceptance requirements for other castings defects. Such as porosity, sand holes, shrinkage cavity, shrinkage porosity, slag inclusion, sand inclusion and crack...

 

Four, request to bug fixes are as follows:

 

Use MG240 cast iron electrode

 

MG240 is excellent cast iron welding material, weld metal with grey cast iron with the same organization and the color of the weld metal and heat affected zone has good machinability can be welding a variety of iron castings. Purpose: casting defects, engine block, cylinder head, gear

 

Directions for use: 1 manual electric arc welding: for machining after welding of cast iron parts, need to use heat welding, cast iron pieces first preheated to 600 degrees. Immediately after using MG240 rapid welding electrode, welding heat preservation, slow cooling. For cast iron parts don't need machining, cold welding can be used. 2 welding: remove all rust, dirt, grease, etc before welding will first substrate preheat to 430 degrees

 

Importance in the thick iron open 75 degrees "V" groove. Using micro carbon neutral flame, easy to produce porosity ° oxidizing flame

 

Using MG240 electrode stick on solder used at the same time, and to ensure that each fusion welding drops good castings must be slow cooling after welding, in order to prevent the hardening and cracking.

 

Tensile strength of.......................................... More than 40000 Psi (275 n/m ㎡)

 

Soldering temperature (welding).......................................... 870 ° C (1600 ° F)

 

Hardness after welding.......................................... HB200 (welding) HB180 (welding)

 

Match color.......................................... good

Updatetime:2013-05-30 17:40:42  Views:0
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