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Variable-cross-section thin-wall titanium tube fluid mechanical moulding device

A fluid mechanics and variable cross-section technology, which is applied in the field of hydrodynamic forming devices for variable cross-section thin-walled titanium tubes, can solve problems such as low efficiency, no variable cross-section tube forming, and low degree of deformation of deformed materials.

Inactive Publication Date: 2012-11-21
上海桦厦实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the forming method involved in this technology makes the degree of deformation of the deformed material low, the efficiency is not high, and more importantly, it does not involve the forming problem of variable-section tubes

Method used

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  • Variable-cross-section thin-wall titanium tube fluid mechanical moulding device
  • Variable-cross-section thin-wall titanium tube fluid mechanical moulding device
  • Variable-cross-section thin-wall titanium tube fluid mechanical moulding device

Examples

Experimental program
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Effect test

Embodiment 1

[0020] like figure 1 As mentioned above, this embodiment includes: a sealed casing 1 and a high-pressure joint 2 connected thereto, and a plunger 3 and a mold 4 arranged in the sealed casing 1, wherein: the plunger 3 is provided with a die 5 inside, and the mold 4 The connecting rod 6 facing the press rod 16 is sleeved inside, the plunger 3, the sealing shell 1 and the mold 4 form a cavity 7 and the cavity 7 is filled with a hydraulic working medium 8, and the upper end and the lower end of the mold 4 are respectively It is in contact with the plunger 3 and the hydraulic working fluid 8 .

[0021] The top end of the plunger 3 is fixedly connected with the press slide block 9 .

[0022] The die 5 is specifically located in the socket of the plunger 3 and fixed with nuts 10 to achieve static fit.

[0023] The bottom of the sealed housing 1 is provided with a step 11 , and a plug 12 is provided at the position where the sealed housing 1 is in contact with the connecting rod 6 ....

Embodiment 2

[0035] In order to study the specification of the force and even the characteristics of the analysis process, a hydrodynamic forming test of the workpiece 15 was completed. Use cold-drawn high-quality thin-walled tubes (attached figure 2 a), the material is industrial pure titanium TA1, manufactured according to GB / T3624-1995 standard, and the delivery state is soft state annealed according to the standard specification.

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Abstract

The invention relates to a variable-cross-section thin-wall titanium tube fluid mechanical moulding device in the technical field of thin-wall tube moulding. The device provided by the invention comprises a sealing shell and a high pressure joint connected with the sealing shell as well as a plunger and a mould which are arranged in the sealing shell, the interior of the plunger is provided with a female die, a connected rod which is over against the mandrel of a pressure machine is sheathed in the mould, the plunger, the sealing shell and the mould form a cavity, the cavity is full of a hydraulic working medium, and the upper end and lower end of the mould are respectively contacted with the plunger and the hydraulic working medium. In the invention, an axial variable-cross-section thin-wall moulding device and process are completed by adopting a fluid mechanical moulding method. Compared with liquid extrusion on a movable mandrel and necking down, the thin-wall tube moulded by adopting fluid mechanics has the advantages that the allowable expansion deformation degree is up to more than 30%, the varieties of manufactured parts are increased, and the labour productivity is improved.

Description

technical field [0001] The invention relates to a device in the technical field of forming thin-walled tubes, in particular to a hydrodynamic forming device for variable-section thin-walled titanium tubes. Background technique [0002] Titanium is a metal with excellent performance and strategic significance in economic development and national security. It is called "space metal" and "ocean metal". Compared with other structural materials, titanium alloy has the most important advantages of high specific strength and good thermal strength. In the temperature range of 400°C to 500°C, the specific strength of titanium alloy exceeds that of most stainless steels and oxidation-resistant steels. Titanium alloys are basically not brittle at low temperatures (the impact toughness of low carbon steel at -50°C is only 1 / 10 of that at room temperature), and the strength of α-type titanium alloys at liquid hydrogen temperature (-253°C) is twice that of room temperature , with satisfa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D26/033
Inventor 王以华吴振清王韧
Owner 上海桦厦实业有限公司
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