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Isostatic pressing precise forming device and homogeneous sintering method for molybdenum thick-walled tube blank

A thick-walled tube and isostatic pressing technology, which is applied in the field of static pressure precise forming device, static pressure precise forming and homogeneous sintering, can solve the problems of labor intensity of operators, heavy dust hazard, long working time of powder filling, etc., and achieve Avoiding pressure medium leakage, uniform distribution, and reducing the difficulty of tissue regulation

Active Publication Date: 2019-05-14
JINDUICHENG MOLYBDENUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At the same time, as the unit weight of molybdenum billets continues to increase, the uniformity of the billets with manual powder filling depends on the experience of the operator, and the working time for powder filling is longer, and the labor intensity and dust hazards of the operators are greater.

Method used

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  • Isostatic pressing precise forming device and homogeneous sintering method for molybdenum thick-walled tube blank
  • Isostatic pressing precise forming device and homogeneous sintering method for molybdenum thick-walled tube blank
  • Isostatic pressing precise forming device and homogeneous sintering method for molybdenum thick-walled tube blank

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Embodiment 1

[0064] Next, a molybdenum thick-walled tube blank in the present invention is prepared by isostatic pressing and homogeneous sintering method Molybdenum tube blank.

[0065] Prepare molybdenum powder, Fsss particle size is 5.4μm, purity is 99.98%, bulk density is 1.04g / cm 3 ;

[0066] Through the isostatic pressing forming and sintering experiments of small-sized blanks, the isostatic pressing forming shrinkage of the wall thickness and height of this batch of molybdenum powder were 11% and 12%, respectively, and the sintering shrinkage of the wall thickness and height were both 13%. %, based on which the inner size of the rubber sleeve is calculated, and then the isostatic precise forming device is designed;

[0067] Assemble the isostatic precise forming device, set the quantitative distributor on the mandrel, and hoist it to the base bracket as a whole. The bottom of the steel sheath 1 is completely matched with the vibration platform 15. The steel mandrel 5 and the form...

Embodiment 2

[0074] Next, a molybdenum thick-walled tube blank in the present invention is prepared by isostatic pressing and homogeneous sintering method Molybdenum tube blank.

[0075] Prepare molybdenum powder, Fsss particle size: 2.45μm; bulk density: 1.47g / cm 3 ;

[0076] Through the isostatic pressing forming and sintering experiments of small-sized blanks, the isostatic pressing forming shrinkage ratios of the wall thickness and height of the batch of molybdenum powder were 11.5% and 11.5%, respectively, and the sintering shrinkage ratios of the wall thickness and height were respectively 12%, 11%, according to which the inner size of the rubber sleeve is calculated, and then the isostatic precise forming device is designed;

[0077]Assemble the isostatic precise forming device, set the quantitative distributor on the mandrel, and hoist it to the base bracket as a whole. The bottom of the steel sheath 1 is completely matched with the vibration platform 15. The steel mandrel 5 and...

Embodiment 3

[0084] Next, a molybdenum thick-walled tube blank in the present invention is prepared by isostatic pressing and homogeneous sintering method Molybdenum tube blank.

[0085] Prepare molybdenum powder, Fsss particle size: 3.8μm; bulk density: 1.08g / cm 3 ;

[0086] The molybdenum powder of this specification belongs to the conventional molybdenum powder, and the isostatic pressing shrinkage ratios of its wall thickness and height are 13% and 12.5% ​​respectively, and the sintering shrinkage ratios of wall thickness and height are both 12% and 11% respectively. The inner size of the rubber sleeve is designed to design an isostatic precise forming device.

[0087] Assemble the isostatic precise forming device, set the quantitative distributor on the mandrel, and hoist it to the base bracket as a whole. The bottom of the steel sheath 1 is completely matched with the vibration platform 15. The steel mandrel 5 and the forming device in the free state The rubber sleeve 4 is perpen...

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Abstract

The invention discloses an isostatic pressing precise forming device for a molybdenum thick-walled tube blank. The isostatic pressing precise forming device comprises a rubber sleeve with a steel corerod arranged inside. A tubular cavity is formed between the steel core rod and the rubber sleeve. A rubber plug is arranged at one end of the tubular cavity. The other end of the tubular cavity is connected with a composite base formed by a steel base and coating rubber. The coating rubber of the composite base overall coats a steel inner core. The tubular cavity is filled with molybdenum powder.A shaping rubber plug is arranged between the rubber plug and the molybdenum powder. The outer portion of the rubber sleeve is connected with a steel sheath in a sleeved manner. The steel sheath is fixed to a base support. The problems that molybdenum powder at the joint of a total steel base and the lower portion of a molybdenum tube blank is pressed and formed to be in a wedge shape, and consequently a rubber sleeve is cut apart, and pressure media are leaked can be avoided. The invention further discloses an isostatic pressing precise forming and homogeneous sintering method for the molybdenum thick-walled tube blank. Powder filling of a quantitative equal altitude method and the two-time sintering schedule of the low temperature increase rate and the long low temperature preservationtime are adopted, and the sintered thick-walled molybdenum tube blank regular in shape and fine and uniform in grain can be prepared out.

Description

technical field [0001] The invention belongs to the technical field of molybdenum tube blank preparation devices, and in particular relates to a molybdenum thick-walled tube blank isostatically pressed precise forming device, and also relates to a molybdenum thick-walled tube blank isostatically pressed precisely formed and homogeneous sintering method. Background technique [0002] In recent years, the rapid development of the electronics industry and the new energy field has made the trend of sputtering substrates to develop in the direction of large sizes more and more obvious, and the requirements for the size of molybdenum targets are also increasing. As the glass substrates of the 10th generation and 11th generation lines of Japan Sharp Company reach 2880×3130mm and 3000×3320mm respectively, the molybdenum planar target has higher and higher requirements for the width of the molybdenum plate rolling mill roll and its supporting equipment. The cost of equipment has incr...

Claims

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Application Information

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IPC IPC(8): B22F3/03B22F3/04B22F3/093B22F3/00B22F3/10B22F5/12
Inventor 冯鹏发党晓明卜春阳张菊平张铁军段琳琳罗锋
Owner JINDUICHENG MOLYBDENUM CO LTD