Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Firing Technology of Large Nixing Pottery Vessels

A technology of Nixing pottery and Nixing pottery clay, which is applied in the field of firing technology of Nixing pottery, can solve the problem of uneven hardness, achieve the effects of consistent hardness, synchronous dehydration, and avoid cracking defects

Active Publication Date: 2020-01-10
广西钦华陶艺开发有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a firing process for large Nixing pottery vessels, which can solve the defect of different hardness inside and outside the body, thereby greatly improving the 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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Firing Technology of Large Nixing Pottery Vessels
  • Firing Technology of Large Nixing Pottery Vessels

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1) Mix Dongni and Xini at a weight ratio of 4:6 to obtain Nixing pottery clay, and add 0.1% of its weight of EuCl to Nixing pottery clay 2 , through a series of processes such as grinding, pressure filtration, vacuum mud refining, and aging to make mud with a moisture content of 25%;

[0020] 2) Inject the mud into the gypsum mold, and the mold absorbs the moisture in the mud. When the thickness of the green body reaches 10cm, discharge the excess mud. When the water content of the green body drops to 18%, take it out from the mold to obtain Nixing Tao Da 200 vase blanks (maximum diameter 60cm, height 1m). Among them, there were 195 intact blanks, and 5 were slightly deformed;

[0021] 3) Dry 195 intact green bodies in the shade and send them into the kiln for firing. First, raise the temperature inside the kiln to 450°C at a rate of 80°C per hour, and then increase the temperature at a rate of 140°C per hour. Raise the temperature to 1100°C, keep it warm for 1 hour, ...

Embodiment 2

[0023] 1) Mix Dongni and Xini at a weight ratio of 6:4 to obtain Nixing pottery clay, and add 1% of its weight of EuCl to Nixing pottery clay 2 , through a series of processes of grinding, pressing, vacuum mud refining, and aging to make mud with a moisture content of 28%;

[0024] 2) Inject the mud into the gypsum mold, and the mold absorbs the moisture in the mud. When the thickness of the green body reaches 10cm, discharge the excess mud. When the water content of the green body drops to 20%, take it out from the mold to obtain Nixing Tao Da 200 vase blanks (maximum diameter 60cm, height 1m). Among them, 198 were intact green bodies, and 2 were slightly deformed;

[0025] 3) Dry 198 intact green bodies in the shade and send them into the kiln for firing. First, raise the temperature inside the kiln to 550°C at a rate of 130°C per hour, and then increase the temperature at a rate of 180°C per hour. Raise the temperature to 1200°C, keep it warm for 2 hours, stop heating, an...

Embodiment 3

[0031]1) Mix Dongni and Xini at a weight ratio of 5:5 to obtain Nixing pottery clay, and add 0.5% of its weight of EuCl to Nixing pottery clay 2 , through a series of processes of grinding, pressing, vacuum mud refining, and aging to make mud with a moisture content of 26%;

[0032] 2) Inject the mud into the plaster mold, and the mould absorbs the moisture in the mud. When the thickness of the green body reaches 10cm, discharge the excess mud. When the water content of the green body drops to 19%, take it out from the mold to obtain Nixing Tao Da 200 vase blanks (maximum diameter 60cm, height 1m). Among them, 192 were intact green bodies, and 8 were slightly deformed;

[0033] 3) Dry 195 intact green bodies in the shade and send them into the kiln for firing. First, raise the temperature in the kiln to 500°C at a rate of 110°C per hour, and then increase the temperature at a rate of 160°C per hour. Raise the temperature to 1150°C, keep it warm for 1.5 hours, stop heating, a...

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 firing process of a large nixing pottery ware. The firing process comprises the following steps that 1, EeCl2 accounting for 0.1-1% of the weight of the nixing pottery is mixed in the nixing pottery to prepare slurry; 2, the slurry is injected into a plaster mold, and mold release is performed to obtain a large green nixing pottery body; 3, the green body is dried in the shade and is fed into a kiln for firing, and a large nixing pottery ware finished product is obtained. Bonding between active oxygens in upper and lower layers of silica tetrahedrons can be disconnected by adding the divalent rare-earth chloride EeCl2, the EeCl2 re-produces bonding with the active oxygens in the upper and lower layers, certain flexibility is further produced between divalent rare-earth ions and the active oxygens, and the large nixing pottery ware can extend or contract. Therefore, the effect of adjusting the dehydration speed of the green body can be played, internal dehydration and external dehydration of the green body can be synchronized, the internal hardness and the external hardness of the green body can be consistent, and accordingly the soft collapse defect occurred in mold release and cracking defect occurred in the follow-up drying and firing process are avoided.

Description

technical field [0001] The invention relates to a firing process of Nixing pottery, in particular to a firing process of a large vessel of Nixing pottery. Background technique [0002] Nixing pottery in Qinzhou, whose scientific name is purple clay pottery, is one of the four famous pottery in China together with Jiangsu Zisha pottery, Yunnan Jianshui pottery, and Chongqing Rongchang pottery. Nixing pottery utensils are divided into large utensils (diameter and / or height ≥ 40cm and less than 100cm) and small utensils (both diameter and height < 40cm) according to the utensil model. For large-scale Nixing pottery products with complex shapes, large volumes, thick walls and large quantities, the grouting molding process is generally used. Grouting molding includes mold making, grouting, grouting, grouting, consolidation, demoulding and other processes. For mold making, standard β-gypsum powder is generally used, and water is added to make gypsum slurry. After stirring, va...

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): C04B33/13
CPCC04B33/131C04B2235/6562C04B2235/6567
Inventor 苏文中
Owner 广西钦华陶艺开发有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com