Manufacturing method for top blank of perforating machine
A manufacturing method and piercing machine technology, applied in the direction of manufacturing tools, metal rolling, metal rolling, etc., can solve the problems of easy wear and corrosion, short service life, etc., achieve strong wear resistance, reduce production costs, cost reduction effect
Inactive Publication Date: 2014-06-11
江苏优泽科技有限公司
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AI Technical Summary
Problems solved by technology
[0002] The piercing machine plug is mainly used for piercing seamless steel pipes such as stainless steel, alloy steel and high alloy steel. Seamless steel pipe, because the plug is in contact with the heated billet without gaps, is always under high temperature and high load conditions, is very susceptible to wear and corrosion, and has a short service life
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment
[0019] Choose molybdenum powder that meets the Fmo-1 standard, with a particle size of 2.8 μm and a bulk ratio of 0.9 g / cm 2 , according to the following proportions by mass: 100 parts of molybdenum powder, 2.2 parts of Ti, 0.08 parts of Zr, 0.4 parts of C, 0.015 parts of La;
[0020] Stir in a mixer for 21 hours, then weigh 2.9Kg of mixed powder and put it in a rubber sleeve, artificially shape it, press it with 250 tons of static pressure, turn it into shape with a lathe, and heat it in an intermediate frequency furnace at 200°C under the protection of a hydrogen atmosphere. The heating rate per hour was raised from room temperature to 600°C. After holding for 1 hour, the temperature was raised to 800°C at 150°C / h. After holding for 2 hours, the temperature was raised to 1 100°C at 100°C / h. ℃ / h to 1650°C, keep it warm for 1.5h, then raise it to 1850°C at 50°C / h, keep it at 3h, then raise it to 1940°C at 20°C / h, keep it at 7h, cool down to room temperature, and take it o...
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Abstract
The invention relates to a manufacturing method for a top blank of a perforating machine. The method comprises the following steps of selecting materials, burdening the materials, mixing the materials, weighing and loading the materials, shaping, pressing, turning molding, high-temperature sintering, forging molding and turning correcting. Compared with the existing ordinary molybdenum top, the manufactured top has the following advantages: 1) the hardness and density of the forged molybdenum top are large, the average density is more than 9.7g / cm<3> and increased by 2.5 to 5 percent compared with the ordinary molybdenum top, the Vickers hardness can reach more than 300 and can be improved by 30 to 50 percent compared with the hardness of the ordinary molybdenum top; 2) the forged molybdenum top is strong in abrasion resistance, more than 200 forged molybdenum tops can be perforated in the perforating process compared with the ordinary molybdenum top, and the abrasion resistance is improved by 60 to 70 percent; 3) the cost for perforating a steel pipe can be greatly reduced.
Description
technical field [0001] The invention relates to the field of steel pipe manufacturing, in particular to a method for manufacturing a piercer plug blank. Background technique [0002] The piercing machine plug is mainly used for piercing seamless steel pipes such as stainless steel, alloy steel and high alloy steel. The seamless steel pipe, because of the seamless contact between the plug and the heated billet, is always under high temperature and high load conditions, is very susceptible to wear and corrosion, and has a short service life. Contents of the invention [0003] The object of the present invention is to provide a method for manufacturing the plug blank of the piercer, so as to improve the hardness of the plug [0004] And wear resistance, prolong service life, greatly reduce production costs. [0005] The present invention is realized in this way: the manufacturing method of the plug blank of the piercing machine is characterized in that it inc...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B23P15/00B21J5/02B22F3/16B22F5/00
CPCB23P15/00B21B25/00B21J5/002
Inventor 马中亮
Owner 江苏优泽科技有限公司