Investment Casting Filters
Product Line Overview

Improving Performance withCleaner MetalASK Chemicals (legacy) has represented superior

In its position as an innovation leader, ASK Chemicals

quality, excellence and innovation within thehas introduced major patented technologies

investment casting filtration market for over three

throughout its history. The edge-coated products

decades. The company developed fully sinteredand our high surface area filters are testament to

reticulated ceramics in the early 1980s. This

this fact.

revolutionary technology represents the beginningof filtration within high-temperature alloys. Thanks

ASK Chemicals has also developed a holistic

to this advancement, investment casters world­

business approach designed to maximize ourwide now enjoy higher quality and cleaner metal

customers' added value.

with excep­tional yield enhancements.
In conjunction with our superior product portfolio
ASK Chemicals UDICELL reticulated ceramics –we offer three outstanding complementary services

world renowned for their quality – represent theto our customer base: Technical Services, Designpinnacle brand in the industry. Produced to theServices and Research & Development.

very highest standards and using only the finest
materials, this filter excels in terms of performance,quality and consistency.

 eveloped fully sintered reticulated
Dceramics (legacy)Over 30 years of innovation
Highly controlled in-house production
Custom solutions
Holistic value-added services

Custom solutions
Apart from the system solutions mentioned in this brochure, ASK Chemicals also offers you custom solutions
to fit your individual process. Please contact us to discuss your specific needs.
2|Basic Information
Investment casting filter families
UDICELL	Highest quality and purity investment castingEXACTFLO Alumina	Highly pure alumina filter

filter based on zirconia

Industries served
Aerospace
Investment casting filters for structural castings, as well as engine
blades and guide vanes within the aerospace industry• Superalloys and aluminum alloys

Land-based energy
Investment casting filters for the manufacture of casting parts for energy
generation (power plants, gas turbines, hydro and wind power)• Superalloys

Biomedical
Investment casting filters for the medical field for perfect castings• Superalloys

Automotive
Investment casting filters for the manufacture of highly intricate engines andengine parts, such as turbo chargers and highly durable exhaust manifolds• Steel and superalloys

Master melt alloys
Filters for the production of base alloys required in investment
casting production• Alloys

Commercial castings
Investment casting filters for many applications in the production of parts,
equipment and machinery for the sports and recreation industry• Steel and aluminum|3

UDICELL Cup Filters
Top performing filters for variable use

Cup filters are widely used because of their ease of use. Proper placementin the cup is important. ASK Chemicals produces the highest quality cup
filters in the industry. Our filters can be flexibly tailored to meet customer­
specific requirements. We also provide our UDICELL filters in a wide varietyof specifications and pore sizes.

Benefits• Minimization of non-metallic inclusions• Low-turbulence mold filling guaranteed• Available in tapered design with edge coating and/or fiber gasket
Filter placement in the cup

Incorrect placement

Correct placement

Proper installation of the filter ensures that functions
successfully. Improperly placed filters will result ininconsistent flow rates and potentially improper sealingthat can create gaps for molten metal to flow through.

Cup filter

Cup filter

Gate filter

Filter sizeinch

In-line filter

4|

Flow rate

Capacity

10 ppi15 ppi20 ppiair melt

vacuum melt

kg / sec

kg / sec

kg / seckgkg

2.8 TOD x 1

6.2

5.7

595

98

3.9 TOD x1

12.6

11.5

10.3

192

237

4.81 TOD x 1

19.6

18

16.1

300

369

TOD = tapered, outer diameter on top
The details supplied should be regarded as reference values and not warranted values.

UDICELL Gate Filters
Custom designs for the best filtration

Coated gate filters are an effective option for the filtration of investment
castings, as the gap between the filter and the casting is smallest here.
ASK Chemicals offers gate filters in multiple shapes and sizes, and they
are also available with a coating.

Benefits• Filtration closest to casting• Filtration directly on the casting• Available in multiple shapes and variants
Shapes• Round• Square• Doughnut• CustomGate filter
Gate filter
Cup filter

Filter size

Flow rate

Capacity

10 ppi15 ppi20 ppiair melt

vacuum meltkg / sec

kg / sec

kg / sec

kgkg

130.19

0.17

0.16

3419

0.44

0.39

0.35

7925

0.78

0.70

0.63

1216mmIn-line filter
The details supplied should be regarded as reference values and not warranted values.

|5UDICELL In-line Filters
Reticulated filters for increased cleanlinessIn-line filters provide filtration closer to the casting, even with fine pore size
filtration. In-line filters reduce metal turbulence, thereby preventing shell
mold erosion. ASK Chemicals offers in-line filters with a variety of coatingsand in various shapes and sizes.

Benefits• Reduction of turbulence in the runner system• Available with edge coating• Filtration close to casting
INFO
Edge Coatings

FGFG – Range of fiber gasket materials to ensure a snug fit
SEC – smooth uniform edge coating for straight wall filter
FEC – durable edge coating applied to tapers and special shapes
Standard – no edge coat

SECFECSTANDARD

In-line filter
Gate filter
Cup filter

Filter size
mm50 OD x 25

In-line filter

Flow rate

Capacity

10 ppi15 ppi20 ppiair melt

vacuum melt

kg / sec

kg / sec

kg / sec

kgkg

3.15

2.84

2.55

50

63

75 OD x 25

7.20

6.48

5.83

111

143

100 OD x 25

12.60

11.34

10.21

198

254

125 OD x 25

19.35

17.42

15.67

309

397

OD = Outer diameter
The details supplied should be regarded as reference values and not warranted values.

6|

UDICELL Tube and Dam Filters
Filters for master alloy production

Tube and dam filters are used in master melt alloy production within a Tundish
furnace. ASK Chemicals offers custom shapes and sizes for different Tundish
designs. Filters comprising multiple pore sizes are also available.

Benefits• Suitable for a wide variety of Tundish designs• Multiple tubular sizes and diameters available• Available with coats, NewWave and dual pore
• Allows for multi-stage filtration

INFO
Dual pore
ASK Chemicals can produce filters with different pore sizes in a single filter, thereby enabling
double filtration. The coarse pores on the inlet face of the filter protect the finer pores on theoutlet face. Filters are available in any combination of pore sizes.

10 ppi30 ppiINFO
NewWave
The NewWave design increases the surface area of the filter face and the undulating surface
reduces metal splash during pouring. It also makes for improved priming.

|7

EXACTFLO Alumina Filters
Excellent filtration for the highest demands

Alumina filters for the aerospace industry are ideally suited to the mostdemanding of applications. Available in dual pore, edge coatings, various
pore sizes and shapes.

Benefits• Reduced inclusions in aluminum alloys• Comes in a variety of sizes and shapes• Available in special designs• Customizable

Alumina filter for the aerospace industry
The aerospace industry makes use of castings for the most demanding of applications.
Consequentially, the quality required of these castings is of the utmost importance.
EXACTFLO Alumina filters are an ideal solution for the production of aerospace castings.
The fully sintered EXACTFLO filters exhibit excellent strength and optimum effectivenessin the removal of impurities from molten metal.

8|Added Value for our Customers
Application technology and technical sales – for complete process transparency
Application technology and technical sales at ASK Chemicals offer our customers comprehensive
expertise in all areas of foundry technology and metallurgy. We offer a comprehensive service that focuseson the production process as a whole and helps customers not only to cut costs but also to enhancetheir processes. ASK Chemicals also conducts casting defect analyses and offers its customers theopportunity to have tailored training sessions on the customer’s own premises.

Benefits• Improved decision-making thanks to greatertransparency• Reliable recommendations• Quick response• Customized solution development• Cost-in-use reporting (i.e. savings)• Casting defect analyses• On-site training sessions

Technical expertise at your commandWe support our customers with our technical expertise.
Our team of experts joins forces with our customers to findthe ideal filter for their specific application(s).
We consider every critical factor: metal type, metal temperature,
pour weight, pour time, required filter shape, filter placement andtype of casting.
All these criteria must be considered…one size filter simply
doesn’t fit all situations.

|9Design Services – for perfect casting results
Our Design Services team monitors the entire process from the development of the design concept andvalidation right up to the production of the cast part prototype. Our engineers have a wide range ofexperience and a clear understanding of all aspects of foundry technology and metallurgy. Our Design
Services team has the right combination of design, production and simulation expertise, co-operates
with external companies and service providers, and enjoys extensive industry experience. ASK Chemicals' simulation service offers wide-ranging technical knowledge and understanding combined withstate-of-the-art simulation programs (MAGMA, Novacast, FLOW-3D and Arena-Flow®).

Benefits• Higher productivity and optimized• Optimized design and manufacture ofcatalyst consumption

model plates, core boxes and molds• Manufacturing process design,• Less scrap• Shorter product launch times• Quicker time to market

including inorganic technology• Calculation of optimal feed

Simulation services
The simulation of casting processes provides foundries with invaluable casting mold information. Specifically, this benefit
allows for the optimization of gating and feeding systems, overflows, venting design and risers. Moreover, it provides criticalinsight into the influences and effects directly related to casting integrity, such as cooling and heating measurements, fillingand solidification times.

From the idea to the prototype
ASK Chemicals supports your entire process from the concept to prototype production. Your benefit:
you enjoy wide-ranging expertise from a single source.

Simulation

10 |Cores /Molds

Prototypes

Research and development – for innovation near you
Our Research and Development department performs both innovation-driven groundwork as well as
market and customer-driven development. Interaction between these three areas isof fundamental importance in terms of offering our customers technologically sophisticated products
and efficiency-enhancing solutions at all times. Through close cooperation and the constant exchangeof ideas with our application technology and technical sales specialists,
research and development at ASK Chemicals is always in tune with the market and also
maintains a presence on the customer’s own premises.

Benefits• Many years of experience• Global presence and availability• Comprehensive knowledge of the regional• Short response times for our customers• First-class equipment

sand types and technological requirements

Comprehensive research and development servicesPilot foundry

Product development and technical support• Fully equipped research foundry• Casting defect analysis• Mold production, mold / core package assemblyand casting• Full spectrum chemical and polymer analysis• Product, process and test method development• "Real world" foundry process representation
Metallurgical investigations• Comprehensive examination of the graphite structure
and metallic matrix: graphite size, number of nodules, degree ofdispersion, nodularity, ferrite / pearlite ratio• Preparation of metallurgical reports
Sand laboratory• Examination of high-temperature materials• Testing of tensile strength, compression andtransverse loading• Sand characterization and analysis| 11www.ask-chemicals.com/locations

This information is based on our current state of knowledge and does not represent assurance of the properties of the products described. We are only liable for
product-related advice and information within the scope of duties of disclosure included in collateral contractualagreements unless expressly agreed otherwise. (03/ 24)

Visit www.ask-chemicals.com/trademarks for a complete list of our trademarks.
Please contact ASK for any questions concerning the usage of these marks.