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Custom Ceramic Coffee Mug Grouting Process - Methods of injection molding

Ceramic Mug    From:Xinxiang Ceramic Mug Manufacturers     2024-4-15
Xin xiang Ceramic Mug Manufacturer, 1、Basic grouting method

(1) Hollow grouting (single-sided grouting) The plaster mold used in this method has no core. During operation, after a certain period of time, the mud is injected into the model, and the inner wall of the model is adhered with a certain thickness of the blank. Then pour out the excess mud, the shape of the blank in the model is fixed, this method is suitable for casting small thin-walled products, such as ceramic crucibles, vases, fittings, coffee mugs, pots and so on. Hollow grouting slurry density is small, generally in the 1.65 - 1.8g/cm3, otherwise after pouring the slurry surface of the billet there are strands of mud and not smooth phenomenon. Other parameters are as follows: fluidity is generally 10-15 seconds, the consistency should not be too large (1.1-1.4), the fineness is generally finer than the double-sided grouting.
(2), solid grouting (double-sided grouting) solid grouting is injected into the cavity between the two gypsum mold surface (model and mold core), the mud is absorbed by the model and the core of the working surface of the two sides of the absorption, due to the continuous reduction of water in the mud, so the grouting must be replenished one after another until the mud in the cavity is all turned into a billet until the time. Obviously, the thickness and shape of the blank are determined by the shape and size of the cavity between the model and the mold core, so there is no excess mud to pour out. The method can be manufactured on both sides of the pattern and the size of large and complex shape of the products: such as cups, fish plate, porcelain plate. Solid grouting commonly used thicker slurry, general density of 1.8g/cm 3 or more, in order to shorten the suction time. Thickness (1.5 -2.2), fineness can be coarser.

2、Enhanced grouting method

In order to shorten the grouting time and improve the quality of the injection, on the basis of two basic grouting methods, some new grouting methods have been formed, which are collectively called reinforced grouting.
There are mainly the following kinds of reinforced grouting.
(1). Pressure grouting: the method of increasing the mud pressure is used to accelerate the diffusion of water, thus accelerating the rate of grout absorption. Pressure grouting is the simplest is to raise the position of the slurry bucket, the use of slurry itself from the bottom of the model gravity into the slurry, but also the use of compressed air will be injected into the model slurry. According to the mud pressure, pressure grouting can be divided into micro-pressure grouting, medium-pressure grouting and high-pressure grouting. Micro-pressure grouting grouting pressure is generally below 0.05MPa; medium-pressure grouting pressure in the 0.15-0.20MPa; greater than 0.20MPa can be called high-pressure grouting, at this time it is necessary to use high-strength resin mold.
(2). Vacuum grouting: using specialized equipment in the outside of the gypsum vacuum, or the reinforcement of the gypsum mold in a vacuum chamber under negative pressure, which can accelerate the formation of the billet, improve the density and strength of the billet.
(3). Centrifugal grouting: centrifugal grouting is to make the model in the rotating situation grouting, mud by the role of centrifugal force close to the model to form a dense billet, mud bubbles in the mud due to the lighter, in the model rotation, more concentrated in the middle, and finally rupture discharged, and therefore also improve the speed of grout suction and the quality of the product. However, the size of the solid particles in the mud used in this method can not be too large a difference, otherwise the coarse particles will be concentrated on the surface of the blank, fine particles are easy to concentrate on the inside of the model, resulting in uneven organization of the blank, drying and shrinkage of deformation.
(4). Hot slurry grouting: hot slurry grouting is to set electrodes at both ends of the model, when the slurry is filled, connected to the alternating current, the conductivity of the electrolytes in the slurry is used to heat the slurry, and the slurry is warmed up to about 50 ℃, which reduces the viscosity of the slurry and accelerates the slurry suction speed.

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Xinxiang Ceramic Mug Manufacturer Co.,Ltd Add:Shandong,China Ceramic Mug Catalog
Skype:xxceramic   Tel: +86 151 6506 6178   Fax: +86 531 81901306   WhatsApp:+86 151 6506 6178
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