Unlock instant, AI-driven research and patent intelligence for your innovation.

Porcelain casing preparation method

A technology of porcelain casing and mud material is applied in the field of preparation of porcelain casing, which can solve the problems of cracking and easy deformation, and achieve the effect of excellent product performance and high qualification rate.

Active Publication Date: 2018-03-09
湖南华联火炬电瓷电器有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the quality problems of easy deformation and cracking of wet-formed blanks for high and large products, and improve the pass rate of the manufacturing process, we are looking forward to an effective method and tooling equipment that has a breakthrough in technology and solves quality problems in the production process.

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 more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The method of present embodiment one is used for producing 550kV high 4790mm, the maximum umbrella diameter 570mm ultra-large high-strength transformer porcelain bushing, and its concrete method is:

[0024] 1) Mullite + corundum: 45%; feldspar: 8%; illite, 10% are sanded first, sanding time is 1.5 hours, the fineness is 340 mesh sieve and 0.08%, then add water to make slurry , followed by one feeding, put the slurry into the ball mill, then add 35% clay, 2% mineralizer, mix ball mill for 3.0-4.0 hours, fineness 250 mesh sieve remaining 0.4-0.8%, and then pass through 6 sieves, 4 times of iron removal, mud pressing, 2nd rough refining, stale for no less than 120 hours, to improve the plasticity of the mud.

[0025] 2) The mud is practiced in the ZL1000 vacuum mud refining machine. The vacuum mud refining machine adopts the design of the waist drum-shaped outlet and the design of the step-by-step compression outlet. Then compress step by step to φ1280mm, φ1105mm, φ985mm...

Embodiment 2

[0035] The method of present embodiment two is used for producing 550kV height 4900mm, and maximum umbrella diameter φ 780mm super-large high-strength circuit breaker porcelain bushing, its concrete method is:

[0036] 1) Mullite + corundum: 48%; feldspar: 6%; illite: 8% are sanded first, sanding time is 1.5 hours, and the fineness is 0.05% of 340 mesh sieve, then add water to make slurry , followed by a feeding, put the slurry into the ball mill, then add 35% clay, 3% mineralizer, mix ball mill for 3.5-4.5 hours, fineness 250 mesh sieve remaining 0.4-0.6%. Then go through 6 sieves, 4 times of iron removal, mud pressing, 2nd rough refining, stale for no less than 120 hours, and improve the plasticity of the mud.

[0037]2) Use ZL1000 vacuum mud refining machine to practice mud. The vacuum mud refining machine adopts waist drum-shaped outlet design and step-by-step compression outlet design. It first expands and then compresses, and adopts three-stage compression, from the outl...

Embodiment 3

[0046] The method of the third embodiment is mainly used to produce 1100kV high 10000mm, maximum umbrella diameter φ780mm ultra-large high-strength circuit breaker porcelain bushing, the single-section porcelain bushing is 2m, and it is formed by 5 joints. Its specific method is:

[0047] 1) Mullite + corundum: 50%; feldspar: 5%; illite: 8% are first sanded in proportion, the sanding time is 1.5 hours, the fineness is 340 mesh sieve and the remaining 0.04%, and then water is added to make Slurry, followed by a feeding, put the slurry into a ball mill, then add 35% clay, 2% mineralizer, mix ball mill for 3.5-4.5 hours, and fineness 250 mesh sieve remaining 0.2-0.4%. Go through 6 sieves, the last sieve is 250 mesh, remove iron 4 times, squeeze the mud, and rough the second time, stale for no less than 120 hours to improve the plasticity of the mud.

[0048] 2) Use ZL1000 vacuum mud refining machine to practice mud. The vacuum mud refining machine adopts waist drum-shaped outlet ...

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

No PUM Login to View More

Abstract

The invention discloses a porcelain sleeve manufacturing method. The method comprises the following steps that 1, pug is prepared according to a formula, wherein the pug is prepared from, by mass, 45-55% of a mixture of mullite and corundum, 5-8% of feldspar, 6-10% of illite, 30-40% of clay and 2-5% of mineralizer; 2, the pug is put into a vacuum pugging machine for pugging; 3, electric drying in shade is performed for drying pugged pug, and stale processing is performed after drying is performed; 4, molding is performed, wherein an internal and external form imitation fettling machine for fettling and molding; 5, natural drying in shade is performed and then the pug enters a drying room for drying; 6, glazing is performed; 7, charging and sintering are performed, wherein billet charging is performed through a successive setting and hanging method, and the sintering temperature is 1208-1218 DEG C. According to the porcelain sleeve manufacturing method, the porcelain sleeve yield can be improved, the product performance is excellent and stable, and the porcelain sleeve is efficient and environmentally friendly and saves energy.

Description

technical field [0001] The invention relates to a preparation method of a porcelain bushing, which is mainly used for the preparation of ultra-large and ultra-high strength porcelain sleeves for key components of high-voltage power transmission and transformation equipment, including 550-1100kV ultra-high voltage and ultra-high voltage transformers, transformers, and circuit breakers. . Background technique [0002] At present, with the rapid development of my country's electric power industry, in order to solve the uneven distribution of energy and power loads in my country, the construction of ultra-high voltage and ultra-high voltage power grids is to realize the application of long-distance large-capacity power transmission, realize efficient use of energy, optimize resource allocation, and protect the environment. , is of great significance. In the production process of ultra-high pressure, ultra-high pressure and high-strength large porcelain bushings, wet molding is u...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/34C04B33/26C04B33/02C04B33/30
CPCC04B33/02C04B33/26C04B33/30C04B33/34C04B2235/612C04B2235/661
Inventor 许君奇程娟田东红冯智慧
Owner 湖南华联火炬电瓷电器有限公司