Manufacturing and detecting process method of nuclear main pump piston ring of nuclear power station
A technology for a piston ring and a nuclear main pump is applied in the field of manufacturing and testing technology of the piston ring of the nuclear main pump of a nuclear power plant, which can solve the problems of cumbersome processing process, reduced processing efficiency, and difficulty in clamping a car, so as to save the processing process and improve the The effect of processing efficiency and improving product quality
Active Publication Date: 2021-04-16
HARBIN ELECTRIC POWER EQUIP
View PDF9 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The traditional process is to complete the turning sequence and milling interface of the piston ring, and then connect the interface to form an ellipse, which needs to be riveted, and then turn the ellipse into a circle by turning and grinding. Since the piston ring has been opened and has a thin wall, the Clamping and grinding are relatively difficult, and the processing process is relatively cumbersome, reducing processing efficiency, wasting costs, and low yield
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
[0030] A manufacturing and testing process for a nuclear main pump piston ring of a nuclear power plant, comprising the following steps:
[0031] 1) if figure 1 As shown, the shapes of the first pre-processed piston ring (1) and the second pre-processed piston ring (2) are respectively machined on the forging blank, and the cutting allowance is reserved, and the clamping position (3) is reserved on the forging blank ;
[0032] 2) Stress relief annealing: the first pre-processed piston ring (1) is put into the furnace at room temperature, the second heating rate is less than 50°C per hour, the temperature is raised to 610°C±20°C for two hours, and the third cooling rate is less than 50°C per hour;
[0033] 3) Complete the size of the finish turning piston ring (5) according to the drawings, and turn off two finish turning piston rings (5) from the forging blank;
[0034] 4) Visually check whether there are hairlines, cracks, cut marks and harmful defects on the finished car p...
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 and detecting process of a nuclear main pump piston ring of a nuclear power station. The process comprises the following steps of: respectively turning the shapes of a first pre-machined piston ring (1) and a second pre-machined piston ring (2) on a forging blank, reserving cutting allowance, and reserving a clamping position (3) on the forging blank; and conducting stress relief annealing: specifically, the first pre-machined piston ring (1) enters a furnace at the room temperature, the second heating speed is smaller than 50 DEG C per hour, the temperature is increased to 610 + / -20 DEG C, heat preservation is conducted for two hours, and the third cooling speed is smaller than 50 DEG C per hour. According to the manufacturing and detecting process method of the nuclear main pump piston ring of the nuclear power station provided by the invention, the machining, manufacturing and detecting process of the piston ring is included, and whether a machined product meets the design requirement of the actual state or not is detected through turning and milling of forge piece materials by means of a detecting tool, so that the traditional turning and grinding procedures are omitted, the manufacturing cost is reduced, and the production efficiency is improved; and the method has been widely applied to nuclear main pumps of Hualong One nuclear power station.
Description
Technical field: [0001] The invention relates to a manufacturing and testing process of a nuclear main pump piston ring of a nuclear power plant. Background technique: [0002] The nuclear main pump piston ring of a nuclear power plant is a key component of the shaft seal main pump. The manufacturing and testing process of the nuclear main pump piston ring of a nuclear power plant is particularly important for the normal operation of the shaft seal nuclear main pump and the localization of the main pump manufacturing technology. The traditional process is to complete the turning sequence and milling interface of the piston ring, and then connect the interface to form an ellipse, which needs to be riveted, and then turn the ellipse into a circle by turning and grinding. Clamping and grinding are relatively difficult, and the processing process is relatively cumbersome, reducing processing efficiency, wasting costs, and low yield. Invention content: [0003] The purpose of ...
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 & AuthorityApplications(China)
IPC IPC(8): B23P15/00G01D21/02
Inventor齐淑尊于勇田秀兰王文彬刘洋李家华戚嵩王增艳张雷孙虹
OwnerHARBIN ELECTRIC POWER EQUIP