This document discusses the lost wax casting process and investment casting wax. It begins by providing background on the origins of lost wax casting and its modern applications. It then discusses the composition of investment casting wax, which is made up of various hydrocarbon, ester, and resin components that influence its properties. The document categorizes different types of investment casting wax including filled, emulsified, straight, and specialist waxes. It notes that wax properties are critical for producing high quality castings and that quality control procedures are important. The document concludes that further study could explore improving the recyclability of wax patterns.
Dental waxes are among the routine laboratory materials used in dentistry. For successful lab procedures it is necessary to amplify the material knowledge.
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The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
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Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
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Dental waxes are among the routine laboratory materials used in dentistry. For successful lab procedures it is necessary to amplify the material knowledge.
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The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses
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The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
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A STEP IN CASTING OF CAST PARTIAL DENTURE, a precious duplication process and proper wax up of refractory cast results in accurate fitting of the framework of the prosthesis.
A Review Tribological analysis of Cast Iron by Advanced Coatingijtsrd
In our engineering system, friction, wear and tribology are not phenomena that most peoples are considering on daily basis. Wear tribological process occurs when two surfaces are in contact and both one are moving relative to each other. The cast iron is widely used in industrial sector. It have high rate of friction. To reduce the friction the various types of coating is analyzed as well as with lubrication the rate of wear decreases. Prof. Matin A. Shaikh | Prof. Ajij A. Shaikh | Prof. Mrs. G. V. Patil ""A Review: Tribological analysis of Cast Iron by Advanced Coating"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-2 , February 2020, URL: https://www.ijtsrd.com/papers/ijtsrd29871.pdf
Paper Url : https://www.ijtsrd.com/engineering/mechanical-engineering/29871/a-review-tribological-analysis-of-cast-iron-by-advanced-coating/prof-matin-a-shaikh
How to reduce hot forging costs through innovative techniques?Srikar Shenoy
This presentation gives successful industrial case studies of cost reduction in hot forging by the use of:
1. Anti-scale protective coatings to prevent rejections due to scaling, reduce or eliminate shot blasting, reduce decarburization in heat treatment, hot rolling and hot forging.
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All the process and flowchart of Lost wax casting with example and details working Process.
Made by:
Shaiful islam majumder
Dhaka University of Engineering & Technology(DUET)
International Journal of Engineering Research and Development (IJERD)IJERD Editor
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A STEP IN CASTING OF CAST PARTIAL DENTURE, a precious duplication process and proper wax up of refractory cast results in accurate fitting of the framework of the prosthesis.
A Review Tribological analysis of Cast Iron by Advanced Coatingijtsrd
In our engineering system, friction, wear and tribology are not phenomena that most peoples are considering on daily basis. Wear tribological process occurs when two surfaces are in contact and both one are moving relative to each other. The cast iron is widely used in industrial sector. It have high rate of friction. To reduce the friction the various types of coating is analyzed as well as with lubrication the rate of wear decreases. Prof. Matin A. Shaikh | Prof. Ajij A. Shaikh | Prof. Mrs. G. V. Patil ""A Review: Tribological analysis of Cast Iron by Advanced Coating"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-2 , February 2020, URL: https://www.ijtsrd.com/papers/ijtsrd29871.pdf
Paper Url : https://www.ijtsrd.com/engineering/mechanical-engineering/29871/a-review-tribological-analysis-of-cast-iron-by-advanced-coating/prof-matin-a-shaikh
How to reduce hot forging costs through innovative techniques?Srikar Shenoy
This presentation gives successful industrial case studies of cost reduction in hot forging by the use of:
1. Anti-scale protective coatings to prevent rejections due to scaling, reduce or eliminate shot blasting, reduce decarburization in heat treatment, hot rolling and hot forging.
2. Environment friendly die lubricants that eliminate pollution and increase die life.
3. Zero maintenance die lubricant spraying systems that ensure maximum uptime and no unplanned downtime during hot forging.
Investment materials and lost wax casting /orthodontic courses by Indian dent...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Investment materials and lost wax casting/ online orthodontic coursesIndian dental academy
Indian Dental Academy: will be one of the most relevant and exciting training
center with best faculty and flexible training programs for dental
professionals who wish to advance in their dental practice,Offers certified
courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry,
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All the process and flowchart of Lost wax casting with example and details working Process.
Made by:
Shaiful islam majumder
Dhaka University of Engineering & Technology(DUET)
International Journal of Engineering Research and Development (IJERD)IJERD Editor
journal publishing, how to publish research paper, Call For research paper, international journal, publishing a paper, IJERD, journal of science and technology, how to get a research paper published, publishing a paper, publishing of journal, publishing of research paper, reserach and review articles, IJERD Journal, How to publish your research paper, publish research paper, open access engineering journal, Engineering journal, Mathemetics journal, Physics journal, Chemistry journal, Computer Engineering, Computer Science journal, how to submit your paper, peer reviw journal, indexed journal, reserach and review articles, engineering journal, www.ijerd.com, research journals,
yahoo journals, bing journals, International Journal of Engineering Research and Development, google journals, hard copy of journal
Dental waxes are combinations of various types of waxes
compounded to provide desired physical properties. This presentation includes data on following subtopics of dental waxes: Definition
history, characteristic, classification of waxes, composition, uses of waxes and
properties.
20 Microns Nano Minerals being a subsidiary of 20 Microns is trying to innovate in the niche space of Soft Industrial Minerals with its manufacturing base in Vadodara, Bhuj, and Tirunelveli. It is also seriously concentrating on customizing products for its customers by creating the much-needed value addition to the Industrial Minerals and differentiating it from the products of its parent company, 20 Microns Limited.
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Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
Self Compacting Concrete And Its PropertiesIJERA Editor
Self-compacting concrete (SCC), which flows under its own weight and doesn’t require any external vibration for compaction, has revolutionized concrete placement. Such concrete should have relatively low yield value to ensure high flow ability, a moderate viscosity to resists segregation and bleeding and must maintain its homogeneity during transportation, placing and curing to ensure adequate structural performance and long term durability. Self-compacting concrete (SCC) can be defined as a fresh concrete which possesses superior flow ability under maintained stability (i.e. no segregation) thus allowing self-compaction that is, material consolidation without addition of energy. Self-compacting concrete is a fluid mixture suitable for placing in structures with Congested reinforcement without vibration and it helps in achieving higher quality of surface finishes. However utilization of high reactive Metakaolin and Flyash asan admixtures as an effective pozzolan which causes great improvement in the porestructure. The relative proportions of key components are considered by volumerather than by mass.
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D223235
1. International Journal of Engineering Science Invention
ISSN (Online): 2319 – 6734, ISSN (Print): 2319 – 6726
www.ijesi.org Volume 2 Issue 2 ǁ February. 2013 ǁ PP.32-35
www.ijesi.org 32 | P a g e
Analysis the Properties of Lost Wax Process and Its
Use ability Exploring Possibilities
1
Pankaj Sharma, 2
Doli Kasana, 3
Vijay Kumar, 4
Charat Goel
1
Assistant professor, Mechanical Deptt. , IIMT Engg. College, Meerut, India
2
M.Tech from IIT Roorkee, WRD Deptt. Uttaranchal, India
3,4
Assistant Professor, Mechanical Deptt. J.P Engg. College Meerut, India
ABSTRACT: This paper briefly presents how investment casting wax was developed, with a summary of
structure, categories of investment casting wax available, properties and wax pattern production. Possibilities
of improving the recyclability of the wax are briefly discussed.
Keywords: Investment Casting Wax, Pattern Wax, composition and classification of wax, Quality and control.
I. INTRODUCTION
The origins of precision investment casting or ‘the lost wax process’ as it is usually often known can be
traced back to approximately 4000 B.C. in the ancient civilisations of South East Asia.
Traditionally used for the creation of jewellery and art objects, the need for mass production of near net shape
components during the 20th century led to the industrial development of the precision investment casting
process. Today this ancient process is more relevant than ever, influencing and enhancing our daily lives,
through leisure pursuits, air travel, medical implants, power generation, and a multitude of other diverse
applications.
Success in producing high quality castings in the metal of choice depends on the production of high quality
patterns and runner assemblies. As the most widely used pattern material, due to it’s ability to be shaped in
either liquid, semi-plastic, or plastic states, wax is the key component. If the wax pattern is wrong, the casting
will be wrong - it follows that the correct choice of wax type and product is critical.
II. COMPOSITION OF INVESTMENT CASTING WAX
Wax is the oldest thermoplastic material known to man and originally beeswax was used, but today the
name ‘wax’ applies to any substance having wax-like properties.
Modern blends of investment casting wax are complex compounds containing numerous components:
hydrocarbon wax
natural ester wax
synthetic wax
natural resins
synthetic resins
organic filler materials
water
Hydrocarbon wax, natural ester wax, many types of synthetic wax, and some of the resins used are
compounds of straight chained carbon atoms (aliphatic compounds).
Additionally some of the other resins and filler materials used are compounds of ring structured carbon
atoms (aromatic compounds).
Fundamentally the length and the complexity of the carbon chains of the various components influence
the properties of the final wax. Accordingly many variations are formulated to suit differing foundry
requirements and key properties such as melting point, hardness, viscosity, expansion and contraction, setting
rate, etc are all influenced by the structure and composition of the wax compound.
2. Analysis The Properties Of Lost Wax Process And Its Useability- Exploring Possibilities
www.ijesi.org 33 | P a g e
The complex composition of modern wax products manifests itself in a physical behaviour different to
that of other substances. Unlike other homogeneous chemical compounds, wax does not melt immediately on
heating but passes through several intermediate states:
Similarly the structure and components used in an investment casting wax will influence the expansion and
contraction characteristics:
Like other materials wax expands on heating and contracts on cooling
In comparison with a metal the expansion is relatively high
Wax expansion and contraction rates are not uniform but vary with phase and structure changes during
heating/cooling
III. CATEGORIES OF INVESTMENT CASTING WAX
Filled Pattern Wax
Filled pattern wax has the largest use of wax compounds currently produced. The addition of specialist
filler materials gives excellent injection characteristics to the wax. The contraction range for filled pattern wax
sets the standard for the investment casting industry with a wide variety of applications including the following:-
Low to high viscosity wax
Liquid Injection wax
Paste Injection wax
Screw Injection Technology wax
Low expansion wax
Automatic Injection machine wax
Emulsified Pattern Wax
These waxes have a low to medium range of viscosity, with excellent surface finish properties.
Emulsified wax has a low adhesive factor and therefore they can easily be removed from a die cavity. These
compounds are environmentally friendly due to the recycling process they offer. There are a variety of
contraction rates to suit all types of investment casting applications. The properties of emulsified pattern wax
can be summarised as follows.
Low to medium viscosity
Good surface finish
Liquid and paste injection
Low die adhesion properties
Straight Pattern Wax
This wax is used where specific specialist requirements exist. The wax range has a full spectrum of
available compounds, from low viscosity to high and fast setting production materials. The main properties of
straight pattern wax can be summarised as follows:-
Good surface finish
Can be designed for specialist requirements
Flexible and tough compounds available
High strength wax can be designed
Specialist Wax
These compounds are used to help in the production of finished wax patterns ready for assembly. As
shown below they include wax for repairing, adhesive wax, wax for forming shapes and a range of water soluble
wax.
Soft Repair Wax
Hard Repair Wax
Adhesive Wax
Dip Seal Wax
Rod Wax
Spiral Forming Wax
Water Soluble Wax
Very Strong and Tough Water Soluble Wax
Fast and Total Dissolving Water Soluble Wax
3. Analysis The Properties Of Lost Wax Process And Its Useability- Exploring Possibilities
www.ijesi.org 34 | P a g e
Runner Wax
Usually formulated with a slightly lower melting point than the pattern was in use, and with a low
viscosity for easy dewax
Virgin products are available, more usually reclaimed runner wax is used, produced from used wax
from the autoclave
May be straight (unfilled) or with a percentage of filler retained for improved injection, higher strength,
faster setting with additives to adjust toughness, flexibility, melting point, rheology
Properties can be adjusted to suit individual foundry requirements
IV. RECYCLING
Investment casting wax can usually be recycled with significant environmental and economic benefits.
The process involves returning autoclave wax from the foundry to the wax manufacturer for processing:
cleaning & filtering
using additives to adjust the properties to specification
The resulting products are categorized as:
Reclaim wax for runner systems
Reconstituted wax for pattern production Reconstituted Filled Wax Reconstituted Emulsified Wax
Reconstituted Straight (Unfilled) Wax
QUALITY
Wax properties are of critical importance to foundries for the production of good castings. Once a
specification has been agreed it is essential that compliance with the limits is maintained and supported by
process and quality control.
Key properties are:
Contraction and Cavitation
Congealing Point or Melting Point
Ash Content
Hardness and Elasticity
Viscosity
Surface Finish
Setting Rate
Oxidation Stability
Reclaimability
Recommended physical tests for the control of investment casting wax are:
Melting (drop) Point
Congealing Point
Ash Content
Penetration
Viscosity
V. CONCLUSION
Based on the above information, it can be concluded that there exists a potential for carrying out
systematic investigations on recyclability of pattern wax. The future course of work should be aimed at studying
properties like melting point and congealing point, repeated melting and cooling operation to find variation in
melting point and congealing point. This would need analysis of the existing methods of recycling pattern-wax
in a typical investment casting foundry. This could then lead to development of suitable alternate formulations.
VI. SUMMARY
Investment Casting Wax compounds are complex
They consist of many different components consequently they exhibit a range of properties.
Wax Properties influence pattern behaviour in the foundry and ultimately the quality of castings
produced.
Correct product choice allied with strict process & quality control procedures is essential.
4. Analysis The Properties Of Lost Wax Process And Its Useability- Exploring Possibilities
www.ijesi.org 35 | P a g e
REFERENCES
[1]. Barbara Elvers, Ullmanns Encyclopedia of Industrial Chemistry,5 th Edition, 1996, pp.103-160.
[2]. E. S. Pattison, Fatty Acids and Their Industrial Applications, Marcel Dekker Inc, New York, 1968, pp.85.
[3]. P. E. Kolattukudy, Chemistry and Biochemistry of Natural Waxes, Elsevier Scientific Publishing Co.,Amsterdam, The
Netherlands, 1976.
[4]. The Investment Casting Handbook, Investment Casting Institute, 1968.
Bleier, H., Kukla, C., 2002. Quality in the production of wax patterns. Foundry Trade J.,20–22.
[5]. Olefines, B., 2004. Review of investment casting wax. Foundry Trade J. 3612, 82–86.