Seamless Steel Pipe Molybdenum Piercing Mandrel
Molybdenum Piercing Mandrel For Producing Seamless Steel Pipe In Piercing Machine
Molybdenum Piercing Mandrel
Molybdenum Piercing Mandrel For producing Seamless Steel Pipe in Piercing Machine
Used for perforated seamless steel tubes, such as stainless steel, brazing steel, high temperature alloy steel, molybdenum and other special parts.
The rare earth material is added with molybdenum powder as raw material, processed through mixing, forming, shape processing, high temperature sintering and other processes, and the finished product density is ≥9.7g/cm3.
High temperature strength, high temperature oxidation resistance, long service life, corrosion resistance.
Product diameter specifications: Φ 20-300 mm, and can be made specially according to your drawings requirements for production. It is used for hot rolling and perforating seamless tubes of different materials in severe high-temperature environment.
Specification:
| Type | Diameter mm |
Tolerance of diameter | Length mm |
Tolerance of length | Semifinished |
| DM20 DM25 DM30 DM35 DM40 |
20 25 30 35 40 |
+3 0 |
molybdenum alloy piercing mandrel Mo content:>95% Density >9.7g/cm3 60-80 |
+6 0 |
A type |
| DM45 DM50 DM55 |
45 50 55 |
+3 0 |
80-110 |
+6 0 |
A type |
| DM60 DM62 DM64 DM66 DM68 DM70 DM72 DM74 DM76 DM78 DM80 |
60 62 64 66 68 70 72 74 76 78 80 |
+4 0 |
160-200 |
+8 0 |
B type |
| DM85 DM90 DM95 DM100 |
85 90 95 100 |
+6 0 |
180-260 |
+8 0 |
B type |
| DM110 DM120 DM130 DM140 DM150 |
110 120 130 140 150 |
+8 0 |
200-300 |
+10 0 |
B type |
The high temperature molybdenum mandrels have been developed by our company and the materials science & engineer Institute.The R&D crafts include selecting and mixing raw materials which are compressed into embryos material, sintering in the intermediate frequency furnace in 1850-1950°C and then turning and molding.The average density of the products is more than 9.7g/cm3. Compared with the common molybdenum mandrels, the density improves 2%-6%, the vickers hardness reaches above 350kg/mm2 and the abrasion resistance increase 60%-80%.
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