Manufacturing method for titanium alloy bellows mechanical sealing device
A technology of a mechanical seal device and a manufacturing method, which is applied in the directions of engine seals, mechanical equipment, engine components, etc., can solve the problems of easy occurrence of hydrogen embrittlement and weakened fatigue strength, and achieve the effect of easy heat dissipation and guaranteed performance.
Inactive Publication Date: 2011-04-27
XIAN YONGHUA GROUP
View PDF6 Cites 9 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The object of the present invention is to provide a method for manufacturing a titanium alloy bellows mechanical seal device, which solves the technical problem that the titanium alloy bellows mechanical seal device is prone to hydrogen embrittlement in the background art and weakens its fatigue strength
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0026] A method for manufacturing a titanium alloy bellows mechanical seal device, comprising the following steps:
[0027] 1) Corrugated sheet forming.
[0028] First, heat treatment is performed on the titanium alloy sheet metal. Secondly, grasp the rebound amount of the corrugated sheet after forming,
[0029] Corrugated sheet molding is one of the important processes for making titanium alloy bellows. The corrugations on a single piece are composed of several different arcs and edge angles designed according to the theory of elasticity, so the requirements for the shape and size of the corrugated sheet are relatively strict.
[0031] 1. Special welding fixture:
[0032] First weld the inner hole, and use the special fixture for inner hole welding to weld the two wave plates as a unit.
[0033] Next, weld the outer circle, and use the outer circle welding jig to superimpose the corrugated sheet units that have welded the inner circle one by ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a manufacturing method for a titanium alloy bellows mechanical sealing device, comprising the following steps: 1) forming of wavy pieces; 2) welding of a bellows; 3) heat treatment; and 4) detection. By utilizing the manufacturing method, a titanium material which is hard to weld in an ultrathin manner, is small in linear expansion coefficient and is very wear-resistant can be used in devices such as PTA (pure terephthalic acid), PX (p-xylene) and the like in petrochemical enterprises; and as the spare parts of the equipment, which are contacted with a medium, are all made of a titanium material, and other materials (due to a reason that corrosion resistance and high temperature resistance can not be achieved simultaneously and the like) are not suitable, the purpose of field usage is achieved by the technology.
Description
technical field [0001] The invention relates to a manufacturing method of a titanium alloy bellows mechanical seal device. Background technique [0002] Although the mechanical seal structure of titanium alloy bellows is different, it is mainly composed of two parts: a sealing ring and a bellows. The former acts as a seal, and the latter acts as an elastic element. The main advantages of the titanium alloy bellows mechanical seal are: first, it has corrosion resistance, and its corrosion resistance is more than 10 times that of stainless steel; second, the linear expansion coefficient of titanium is very small. Generally, it is about 8-9, graphite is 6-7, and it is not easy to fall off when the temperature rises after the inlaid ring, while the linear expansion coefficient of general stainless steel is about 16; the third is that the specific gravity of titanium is light, and the general metal is 7-8, but Titanium is about 4 to 5. The manufacturing method and steps of the ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/52
Inventor 申改章
Owner XIAN YONGHUA GROUP