TZM Molybdenum Alloy Top Head For Perforation
1. Description Of TZM Molybdenum Alloy Top Head For Perforation:
The head of the mandrel for the seamless steel pipe is formed of the molybdenum top head, an alloy of molybdenum, titanium, zirconium, and carbon.
The molybdenum alloy plug is made of molybdenum powder FMo-1 raw material added with rare earth materials, and is processed through mixing, forming, shape processing, high temperature sintering and other processes. The finished item has a density of 9.4g/cm3.
2. Size Of TZM Molybdenum Alloy Top Head For Perforation:
Diameter specification: Φ20-300mm,
and can be specially processed according to the drawing requirements.
3. Chemical Content Of TZM Molybdenum Alloy Top Head For Perforation:
| Quantitative analysis |
| Element | Si | Mn | Ni | Cu | V | Zr | O | P | Fe | Mg |
| Concentration(%) | 0.002 | 0.0009 | 0.0008 | 0.0018 | 0.013 | 0.086 | 0.32 | 0.001 | 0.0011 | 0.0015 |
| Element | Al | Ti | Ca | C | N | | | | | |
| Concentration(%) | 0.001 | 0.5 | <0.001 | 0.012 | 0.0022 | | | | | |
| Purity(Metallic Base) Mo≥99.06%(TZM) |
4. Characteristic Of TZM Molybdenum Alloy Top Head For Perforation:
Better creep resistance.
Higher recrystallization temperature.
Better high temperature strength.
Good welding performance.
5. Production Steps Of TZM Molybdenum Alloy Top Head For Perforation:
The molybdenum plug has a long service life, a short process, less consumption and low cost. Among them, the consumption of raw materials can be reduced by 40%, and the power consumption can be reduced by 90%. 30% lower cost. Powder metallurgy production of plugs is a new process that is much faster and more economical.
Raw material:
Key powder adopts Ren 101 powder and FM. One 01 powder. Chin and zirconium are added as hydrides. Carbon is added as pure element (carbon black).
Mix:
Under the condition that the proportion of ingredients is appropriate, uniform mixing is the key to ensure the composition and performance of the alloy. In order to obtain more uniform ingredients, a mixing method combining spoon mixing, sieve mixing and mechanical mixing is used. Carbon black is easy to form a small group. Before mechanical mixing, hydrogenated zirconium, hydrogenated zirconium, carbon black and a small amount of molybdenum powder must be mixed evenly with a sieve. Then poured into a rocking mixing drum. Mechanical mixing for 8-24 hours.
Forming:
The mixed raw materials are put into the latex sleeve. After tamping and beating evenly with a steel rod, hydrostatic pressing is carried out. The molding pressure is 2 tons/cm 2. The linear shrinkage of the powder body during the molding process is 16-22%.
Vacuum sintering:
Sintering is carried out in a vacuum intermediate frequency induction furnace. Furnace rated power 100 aldehyde. Frequency 3000 Hz. Each furnace can hold 110 kg of alloy billets. One furnace can be produced every 24 hours. The surface of the sintered alloy bar is smooth and silvery white. The radial and axial shrinkage of the green compact during sintering is 9-13%.
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Perforation 99.06% TZM Molybdenum Alloy Top Head Diameter 20－300mm Tzm Alloy Top Head Images
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