FORMATION OF HOLLOW SHAPE PORCELAIN BY USING A NEW INTEGRATED SLIP ROTARY MOULDING TECHNIQUE

2015 ◽  
Vol 76 (6) ◽  
Author(s):  
Nor Hayati Saad ◽  
Abdul Rahim M. Sahab ◽  
M. Moza M. Mohtar ◽  
Farrahshaida M. Salleh ◽  
Izdihar Tharazi ◽  
...  
Keyword(s):  
Slip Casting ◽  
Ceramic Product ◽  
Ceramic Structure ◽  
Mould Material ◽  
Moulding Process ◽  
Casting Technique ◽  
Green Strength ◽  
Ceramic Slip ◽  
Specific Temperature ◽  
Hollow Product

Hollow ceramic product is fabricated generally using slip casting technique. The conventional processes produce slip and mould waste which require for disposal schedule. A rotary moulding technique is a feasible process for producing hollow shape ceramic product and eliminates the waste. This paper focuses formulation of the slip and process parameters of the rotary moulding for hollow ceramic product fabrication. The formulated ceramic slip is poured inside the mould rotated at 2-axis system inside a controlled chamber with specific temperature, speed and time for producing green body hollow ceramic product. This process uses minimum amount of ceramic slip and long lasting mould material which will reduce ceramic waste to environment and simplify the manufacturing process for mass production. Using small amount of polymer based dispersant and coagulant agents, experimental analysis resulted the green hollow porcelain product which was successfully removed during de-moulding process without any breaks. The hollow product produces homogeneous forms of ceramic structure after firing procedure and 1.9 MPa green strength with addition of small amount of binder.

Integrated Process of Ceramic Slip Using Rotating Technique

2016 ◽  
Vol 1133 ◽  
pp. 161-165 ◽  
Author(s):  
Abdul Rahim Mahamad Sahab ◽  
Nor Hayati Saad ◽  
Farrahshaida M. Salleh ◽  
Azlin Hamidi ◽  
Doll Said Ngah ◽  
...  
Keyword(s):  
Experimental Studies ◽  
Slip Casting ◽  
Conventional Technique ◽  
Ceramic Product ◽  
Advanced Technique ◽  
Moulding Process ◽  
Casting Technique ◽  
Green Strength ◽  
Ceramic Slip ◽  
Test Result

Hollow shape product from ceramic material is produced generally by slip casting technique. This conventional technique is widely used in ceramic industries. Ceramic slip compound by rotating technique namely slip rotary moulding process is studied for producing the hollow shape green ceramic product. From experimental studies this advanced technique has exemplified high potential in producing green hollow shape ceramic product for mass production. Laboratory test result shows that the rotating technique is able to produce hollow shape green ceramic product with desired thickness and sufficient green strength (1 MPa) able to hold during de-moulding process.

Product Performance Analysis of Fine Bone China Using Ceramic Slip Rotary Moulding Process

2020 ◽  
Vol 899 ◽  
pp. 180-186
Author(s):  
Norazne Nasir ◽  
Nor Hayati Saad ◽  
Norrul Hafizan Ab Wahab ◽  
Bulan Abdullah ◽  
Abdul Rahim Mahamad Sahab
Keyword(s):  
Slip Casting ◽  
High Strength ◽  
Ceramic Materials ◽  
Particle Sizes ◽  
Moulding Process ◽  
Casting Technique ◽  
Bone China ◽  
Heating And Cooling ◽  
Ceramic Slip

By combining the traditional slip casting technique and existing polymer rotary moulding concept a new process namely Ceramic Slip Rotary Moulding (CSRM) machine was established. The CSRM machine was developed to control parameters such as temperature (heating and cooling), time and speed. It is suitable for producing hollow ceramic products especially for ceramic materials such as fine bone china, which is a soft material used for tableware and art ware products due to its brightness and high strength. This research mainly focuses on the preparation of five different particle sizes of fine bone china measurements; 106 μm, 125 μm, 202 μm, 250 μm, and 300 μm respectively by using the CSRM machine. Different particle sizes of the fine bone china materials were tested to check the accurate and suitable wall thickness by controlling the temperature, speed, time and also the weight of the slip to get the best quality of fine bone china products. The parameters obtained will be the guidelines for the overall test to produce the best hollow fine bone china products.

Resin Mould for Ceramic Slip Rotary Moulding (CSRM) System

2020 ◽  
Vol 899 ◽  
pp. 187-192
Author(s):  
Norrul Hafizan Ab Wahab ◽  
Nor Hayati Saad ◽  
Norazne Nasir ◽  
Abdul Rahim Mahamad Sahab
Keyword(s):  
Mechanical Strength ◽  
Water Absorption ◽  
Pressure Casting ◽  
Mould Material ◽  
Moulding Process ◽  
Water Absorption Test ◽  
Ceramic Slip ◽  
Porous Resin ◽  
Percentage Of Water Absorption ◽  
Porosity Percentage

A type of porous resin was proposed to replace the existing plaster mould for Ceramic Slip Rotary Moulding (CSRM) system. The proposed resin is often used in high pressure casting of ceramic sanitary ware and table ware. The effect of resin mould in terms of mechanical strength (flexural properties), porosity percentage and percentage of water absorption as well as moulding process were recorded and compared with previous studies of plaster mould. Five (5) samples of porous resin were prepared according to ASTM 790 for flexural test and ASTM D570 for water absorption test. To determine the porosity percentage, mercury porosimeter test was conducted. The result shows that higher the water plaster ratio resultant in higher porosity percentage and water absorption. The result showed that, the proposed porous resin has great potential in replacing plaster mould as mould material for CSRM system. The mould has a uniform open pore to enable the filtration process to take place within the mould and the slip and has a great mechanical strength. However, porous resin is still a semi-permanent mould with definite service life.

Optimisation of Performance of Dispersants in Aqueous Titanium Slips

2012 ◽  
Vol 520 ◽  
pp. 330-334 ◽  
Author(s):  
Qian Xu ◽  
Brian Gabbitas ◽  
Steven Matthews ◽  
De Liang Zhang
Keyword(s):  
Large Scale ◽  
Slip Casting ◽  
Streaming Potential ◽  
Casting Technique ◽  
Anionic Polyelectrolyte ◽  
Complex Shapes ◽  
Ti Powder ◽  
Ceramic Casting

Slip casting is a well-established ceramic casting technique used for large scale fabrication of ceramic products with complex shapes. A homogenous slip with a desired level of stability is required, which is controlled using a dispersant. This paper describes the selection and optimisation of various dispersants used to produce Ti powder slips. A consideration of the effect of concentration and pH of the solvent on the dispersion of anionic polyelectrolyte dispersants (Dispex N-40, Synthecol SD375 & Dolapix CE64) was examined by measuring the sedimentation height and rate, the streaming potential and the slip viscosity. It was found that Dolapix CE64 showed the best deflocculating effect at 0.3dw.% with pH of 7. In particular, the measurements on Dolapix CE64 gave consistent results. This indicated that Dolapix CE64 is an effective dispersant in the preparation of a titanium slip.

Utilization of Rice Husk Ash and Waste Sludge from Cutting Glass Manufacturing with Angthong Pottery

2014 ◽  
Vol 608 ◽  
pp. 103-107
Author(s):  
Yutthana Kaewtabut ◽  
Wansika Sirimongkol ◽  
Adisak Thueploy ◽  
Siriphan Nilpairach
Keyword(s):  
Rice Husk ◽  
Water Adsorption ◽  
Bending Strength ◽  
Rice Husk Ash ◽  
Slip Casting ◽  
Linear Shrinkage ◽  
Strength Increase ◽  
Casting Technique ◽  
Waste Sludge ◽  
Industrial Ecosystems

Efficiently utilization of rice husk ash (RHA) and waste sludge from cutting glass manufacturer (WSG) as additives to pottery clay would yield positive economic impacts, such as more friendly industrial ecosystems. In this study, The RHA and WSH were used as additives to Angthong pottery clay (APC) and casting and fired properties were examined. Two sets of sample with a mixture consisting of 60% APC, 20% RHA, and 20% WSG (CRG formula) and non-added clay (C100 formula) were prepared by slip casting technique. Samples were fired at temperature 900 °C and 1100°C; then the viscosity of slurry, linear shrinkage, water adsorption, and 3-point bending strength were measured. The results showed that the optimum viscosity for slip casting of CRG and C100 were 1638 cP and 983 cP, respectively. The water adsorptions of all samples decrease while their shrinkage and strength increase with temperature. At 900°C, the water adsorption and the strength of CRG were 32% and 1184 psi, respectively. Comparatively, CRG’s water absorption was 1.5 times higher than C100’s, while their mechanical strength was insignificantly different. This due to the RHA behaves as pore forming and the WSG promotes the sintering of samples.

scholarly journals Studying the Effects of Kaolinite Additions on the Properties of Ceramic Bodies Prepared from Alumina Powder by Slip Casting Technique

2017 ◽  
Vol 4 (ICBS Conference) ◽  
pp. 269-283
Author(s):  
Sabah Salman ◽  
Sheahab Al-jubouri ◽  
Haydar Al-obaidy
Keyword(s):  
Slip Casting ◽  
Alumina Powder ◽  
Casting Technique

Toughening of Ceramic Shell Mould with Rice Husk Fiber (CSm-RH) to Improve Strength Property and Mould Performance

2021 ◽  
Vol 2 (2) ◽  
Author(s):  
Noor Hasliza Kamarudin ◽  
◽  
Zawati Harun ◽  
Rosniza Hussain ◽  
Mohd Riduan Jamalludin ◽  
...  
Keyword(s):  
Rice Husk ◽  
Investment Casting ◽  
Ceramic Body ◽  
Ceramic Shell ◽  
Adhesion Properties ◽  
Ceramic Structure ◽  
Green Strength ◽  
Body Strength ◽  
Shell Mould ◽  
Casting Industry

For ages, ceramic shell mould (CSm) have been extensively applied in investment casting industry. The formation of CSm requires multiple steps of dipping, layering drying and firing stages. The later steps are very crucial as the solidification thin layer CSm that consist of loose ceramic particles easily cracks when exposed to the higher thermal effect. The inclusion of fiber or any reinforces phases is able to enhance fired ceramic body and also strengthen the green ceramic structure. Thus, the feasibility of rougher NaOH treated rice husk fiber (RHT) prior embedded into composited structure has shown a significant CSm improvement by induced a better adhesion properties and larger bonding area with brittle ceramic matrix, resulted in increased green strength (1.34 MPa) and fired body strength (4.32 MPa). Owing to the decomposed of lignin layer in CSm with untreated rice husk fiber (CSm-RHU) exhibited a higher porosity that provide a better permeation paths of air flow during molten metal pouring as increased 30 % from the standard CSm permeability, giving an enormous benefit for investment casting cooling process. Overall, the incorporation of RHT fiber in a CSm matrix of both green and fired body governed in toughening of brittle ceramic body, hence avoid failure to the casting mould.

scholarly journals Preparation and characterization of ZnO microfiltration membrane and its support using kaolin (DD3) and CaCO3

Cerâmica ◽  
2016 ◽  
Vol 62 (362) ◽  
pp. 186-190 ◽  
Author(s):  
B. Boudaira ◽  
A. Harabi ◽  
F. Bouzerara ◽  
S. Condom ◽  
F. Zenikheri ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Calcium Carbonate ◽  
Pore Size ◽  
Average Pore Size ◽  
Slip Casting ◽  
Average Pore ◽  
Membrane Layer ◽  
Casting Technique ◽  
Ceramic Support

Abstract The objective of the present paper was to prepare a ceramic support with membrane. Tubular ceramic supports prepared from kaolin (DD3) and calcium carbonate with 6 and 10 mm inner and outer diameters, respectively, were extruded and sintered at 1200 °C. It has been found that sintered supports had interesting characteristics: average pore size of about 5µm, porosity of about 50%, and monomodal pore size distribution. This support was used to be substrate for a membrane layer of microfiltration. This membrane layer was elaborated from zinc oxide, using slip casting technique. The specimens were subsequently sintered at 1000 °C. The microstructure and porosity as well as the permeability have also been studied. It has been found that the average pore size was about 1.2µm, the layer thickness was ~33µm, and the water permeability measured was about 880 L.h-1.m-2.bar-1.

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