single screw & barrel - Shree Radhekrishna Extrusions Pvt. Ltd.

Report
We provide complete solution to your need of plastic processing machinery
including selection of proper product for various grades / quantity of plastics
depending on application with the help of latest software and our in depth
product knowledge. We satisfy after market needs by providing all
spare parts along with prompt and efficient service too.
Our quality & our service is take us towards our goal, nowadays we have 500
valued & reputed customer in India, we are serving in 18 countries , many large
group is with us & supporting us like a ASTRAL POLYTECHNIK, PRINCE SWR
SYSTEMS, SUDHAKAR IRRIGATION, NANDI GROUP.
Most advanced manufacturing process technology, precision machinery, most
stringent quality control standards and passion for new developments with
the Continuous Research and Development has taken the company to a new
horizon. We believe in “ZERO DEFECT”
A new generation product with highest customer satisfaction has been resulted in
phenomenal growth of the company. Our 70% market share in this industrial
segment has made us “MARKET LEADER”
amongst all other player in Domestic as well as oversees market. Our motto is
“CUSTOMER DELIGHT”
PRINCIPAL
FIELDS OF APPLICATION
PRINCIPAL:
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PVC Resin is Heat sensitive Material and can not extrude alone.
PVC Resin need to be mixed with stabilizer and lubricants with filler.
Stabilizer will improve the heat stability to PVC Resin and Lubricants improve flow properties of Pvc
Resin with addition of filler it will give strengthen to end product as PVC Resin is polar material.
With High speed mixer mixing will take place with all ingredients at certain speed , where Shear will
take place.
While mixing at high speed PVC Resin will shear in between bottom arc of vessel and Shear Blaed.
As the heat generate PVC Resin Bulk density is improve and particle size too.
Which will help to absorb additive . The compound need to be mix up to 80degree to 125 degree
centigrade temperature to absorb additives in totality.
We learn from above process with high speed mixture that compound mixed will need to be cool down
to remove statics created due to shear of material as well as to normalize particle size of Pvc Resin.
APPLICATION
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PVC Resin compounding Rigid and Soft Application.
Color Master batch compounding.
Calcium carbonate coating application.
Rubber Industries.
Textile bleaching compound application.
Hydroscopic material mixing application.
Paint & Coating Industries.
Wet Coating, Ceramics, Dyes and Colours, Pharmaceuticals and other allied industries.
Why Radhekrishna High Speed
Mixer Require for PVC Resin?
Advantage of Radhekrishna Mixer:
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Maximum production with economical operation at Low power Consumption as low as
25Paise/Kg(approx.) at versatile filler loading and without cross contamination.
Economical operation with less labor cost with Atomization.
Lower scrap rates in the extrusion lines due to the best mixing with dry blend quality.
Even with high filer loading Maximum 05 batches/hour.
Excellent improvement of resin bulk density to absorption additives before Filler as it is
hydroscopic nature as well as Mixing with filler .
Adequate designed with precise tolerances ( 4 Axis ) of bottom Arc to Shear Blade for
faster rate of heat temperature as well as of Mixing Blade for faster and unique mixing.
Zero wastage of compound due to decomposition of compound due to moisture .
Perfect positioning of Temperature Sensor for unique compound mixing.
???Why Radhekrishna’s Mixer ???
•More than 18 years of vast experience in plastic processing industry.
•Bought out items those we use are of reputed companies like ABB, Elecon,
Janatics, Fuji, Toho, Telemechanics etc………
•For Better Sealing of mixer vessel we give silicon based Lid gasket for
preventing material leak from vessel.
•To prevent powder infiltration inside bearing we have special technology
called pneumaseal which reduces maintenance.
•Robust machine structure to sustain dynamic load of the machine.
Better after sales service.
•Experience of selling machines in domestic as well as Export Market.
•Balancing of blades and pulley is done dynamically.
•Special TUNGSTEN CARBIDE COATING on edges of blade s preventing worn
Out of blades.
•Inspection window for de scaling of minerals
•Quite Competitive price.
•Faster payback period.
•Less down time.
•Inbuilt Water Inlet & Outlet Piping with Pressure Guage in Structure.
•Inbuilt all Pneumatic Piping in Structure.
SALIENT FEATURES – HEATER COOLER MIXER
Master batch Feeding hopper
made of SS 304 &
pneumatically actuated
discharge valve for auto
feeding.
Breathing cap
made of PP non
woven cloth.
Quick release lid
locking clamps.
Lid gasket is made from
Specially extruded silicon
Foam to prevent powder
leakage from mixer.
Discharge valve is provided
with quick release gate for
easy cleaning.
The discharge valve is made
of SS 304 & provided with
hinge type mechanism for
quick opening during
frequent color changing
needs.
STANDERD SUPPLY- HEATER MIXER
Mixing tool is made
from SS, having
abrasive resistance
and TUNGSTEN
CATBIDE coating on
edge. The tool
structure is either 2
Tier or 3 Tier…
Discharge valve is
level with container‘s
bottom for fast and
almost complete
emptying of the mixing
container.
The right
shape of tool
for right
application
The inside of the vessel is made from SS 304, thickness of
6mm & mirror polished to avoid depositing of material.
The deflector is adjustable
in angle & height,
provided to achieve more
rapid & better dispersion,
even with highly filled
materials.
MOST IMPORTANT
PNEUMA SEAL
The pneuma seal is provided below
the mixing tool to prevent powder
infiltration into bearing and hence
premature failure of bearings.
Bearings with a
lubricating
grease line – For
ease of
lubrication.
The shaft / tank seal is guaranteed
by gasket pack, equipped with
adjustable air flow which is easy to
remove for cleaning purpose.
Limit switch
prevents
rotation of
mixing tool
when the lid
is open
Thermocouple
for precise
measurement of
compound temp.
STANDERD SUPPLY- Cooler Mixer
Due to Balancing problem , after five or ten
years your pulley or belt will be worn out , so
we are providing Motor & Gearbox Assembly
which imported from Germany , so now your
machine is maintenance free.
Inbuilt
Joints For
Inlet &
Outlet
supply of
Water.
Pneumatically
operated
discharge
valve
Mirror polished SS 304
Cooling cone with jacketed
cooling container for water
circulation, ensures better
& efficient cooling cycle in
least time.
Control Panel
Robustly built control
Panel with remote
control extension, for
operator’s ease & easy
to plug in during
installation.
No more outside
pneumatic connections, so
operator can easily operate
it without disturbance & it
can provide you
maintenance free
pneumatic lines
Digital temperature indicators for Heater & Cooler Mixer. Hooter is also provided
for Process completion audible alarm.
SHREE RADHEKRISHNA EXTRUSIONS PVT.LTD , a renewed engineering company has been
Serving in the field of manufacturing screw & barrel for last more then 20 years.
Radhekrishna Extrusions manufactures screw & barrel from 20mm diameter to 150mm
diameter OD and up to 4000mm length.
Twin screw and barrel are the heart of extruders and play very crucial role in extruder.
Radhekrishna Extrusions screws and barrels are manufactured under very precise stage
wise inspection and quality check system. The company has all advance in house
facilities to manufacturer the screw and barrels. The cast experience , technical know
how and entrepreneur skill have made the company renewed in manufacturing screw
and barrel in the field.
Radhekrishna Extrusions following & believe in STAGE BY STAGE INSPECTION & doing by
having very educated Quality Control Department & staff. Also having technically
knowledgeable labors. Our policy no.1 is to provide best service to our all customers.
CONICAL TWIN SCREW AND BARREL :
Radhekrishna Extrusions manufactures twin screw and barrels starting
form 35mm to 110mm . Radhekrishna Extrusions manufactures screws
and barrels according to present market needs like higher filler, low
filler, application and ISI grade. We Radhekrishna Extrusions follow all
standard manufacturing process and adhere all standard norms of
manufacturing. We are manufacturing screw & barrel as per CMT ,
KMD Design.
PARALLEL TWIN SCREW AND BARREL :
Radhekrishna Extrusions manufactures twin screw & barrels starting from
20mm to 150mm screw diameter. We are also manufacturing screw & barrel
As per Kolsite , Windsor, TTS (Thayson) design.
SINGLE SCREW & BARREL
Radhekrishna Extrusions manufactures single screws and barrels starting from
20mm to 150mm screw diameter.
GROOVED FEED BARREL :
The grooved feed is used for achieving high shear and better transportation of material.
As co-efficient of friction between granules and screw and barrel should higher to get
Proper melting of the material, it’s imperative to have grooved feed in the barrel for
Processing of polymers of olefin group.
Application :
o LDPE / HDPE / PP Film
o Raffia / Mono Filament Application
BARRIER SCREW
The barrier screw design separates melted material from un- melted solid material
Into separate channels. This unique mixing feature thoroughly homogenizes the
Melt with little or no increase in its average temperature. Mixing is achieved with an
Undulating root profile in the metering zone of the screw.
Applications:
o LDPE / HDPE / PP Film
o ABS
o PVC Cable
o PVC Pipe & PVC Profile
MADDOC - BARRIER SCREW
Medoc – barrier screw is used to break down particles by forcing material to
flow over barrier flights , in a similar manner to barrier screws.
Application :
o HDPE Pipes
o XLPE Cables
o Lay Flat Pipe
o LDPE Tubing
o PP Film
Maddoc
Maddoc & Barrier Both in
One Screw
SHREE RADHEKRISHNA EXTRUSIONS PVT.LTD
MANUFACTURING
SCREW & BARREL FOR :
 PIPE PLANT
o PVC Pipe Manufacturer (U PVC, R PVC , S PVC , CPVC)
o HDPE Pipe Manufacturer
o PVC Braided Pipe Plant
o PVC Suction Hose Pipe
o PVC Soft Tubing Pipe
 SHEET PLANT
o Air Bubble Sheet Plant
o PP Sheet Plant
o HIPS Sheet plant
o PVC Sheet Plant
o Thermo Forming Sheet Plant
 FILM PLANT
o PVC Film Plant
o Lamination Film Plant
o Blown Film Plant
o Tape Plant
o Multi Layer Film Plant
CABLE MANUFACTURER (ANY TYPE OF MATERIALS)
COMPOUNDING PLANT
INJECTION MOULDING MACHINERY
BLOW MOULDING MACHINERY
ANY TYPE OF PLASTIC PALLET MANUFACTURING
NEW TECHNOLOGY Founded By
After Many years of experience & research & development , we have found
new technology , which we have described below :
1.Screw Pair - First Zone Will Be Tungsten Carbide Coated :
We think you are also aware that the First Zone(Melting Zone) takes higher or more
load in the comparison of other zone, so that's why we are coating of Tungsten
Carbide on surface of same zone so it will give you better life against higher filler
loading & other particles.
2. Front Barrel will be HSS Sleeve Fitted :
For Same reason , we provide sleeve on front barrel ( which will be fitted on Melting
Zone) , Which made from "High Speed Steel", it also give better life against wear &
tear.
Glimpse of Process for Screw & Barrel
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Screw & Barrel made out of EN -41B (Moscow make steel),Nitride steel.
The material is T conditioned by thermal process.
Screw profile is done on thread milling machine.
Honing of barrel is done to achieve superior internal bore surface finish.
Screw is highly polished by special purpose polishing machine.
Stabilizing is done to remove all stresses developed.
Screw & Barrel is nitride harden ,skin hardness maintain 68 to 70 HRC.
Nitrided layer thickness maintained up to 0.47 to 0.50
Screw will be straight with in 0.07 m. m. on turn over by hydraulic press.
Close clearance and exacting machining tolerance for screw and barrel.
All the procedures are done under Strict Quality Control
Procedure of Screw
Raw Material – (We are using EN-41B (Moscow-Steel) Material.)
Chemical Analysis – (We are using EN-41B Material but it is Original
composition or not , to check we do a test for it.)
Gun Drill – ( It is mainly used to check that Screw is Straight or not.
Secondly it is also used for water cooling & drilling in barrel.)
Procedure of Screw
Toughening – (When we use Raw material it has uneven hardness
so to maintain its hardness this process is used.)
Blank Operation – (It is used for Pre – Stage machining for zone
wise flight cutting)
Spline Cutting – (As per Gear Box Spline Screw is used to Spline for
Windsor and Kolsite Design.)
Procedure of Screw
Flight Cutting – (There are two options for Flight cutting)
1. We can cut it on CNC Machine
2. We can manually cut it on Thread Milling Machine.
Thread Milling Machine
CNC Machine
Inspection By us – (We check that everything is O.K or not.)
Procedure of Screw
Stabilizing Operation – (If there are Un-Even Stress or Scratches on
Screw, these process is used to remove that.)
Polishing – (This process is used to polish the Outer Diameter which we
keep.)
Grinding – It is used to maintain Final Size and for Finishing.
Procedure of Screw
Inspection – (We check that every thing is done in proper way or not
until previous process.)
Gas Nitriding – (It is used to maintain hardness of Screw.)
Straightening – (When the screw comes from Nitriding it is not straight
as before so this process is used to Straighten the screw)
Procedure of Screw
Inspection – (In this inspection it is checked that Screw has maintained
the hardness of 65 to 68 HRC or not and 0.4 to 0.5 Deep)
Metal Hardness Tester
Final Grinding – It is used to maintain final Size & Finishing.
Buffing & Polishing – It is used to completely polish the screw and
give a new look to it.
Procedure of Barrel
Cutting :
First of all we are cutting the bars & make the
Proper length of barrel.
Rough Bore – (This Process is used to make bore on Deep Gun drill Machine.)
Tuffning - (When we use Raw material it has uneven hardness so to maintain
its hardness this process is used.)
Procedure of Barrel
Final Bore – (In this Process we can get Final Size of Bore.)
Thread Cutting – It is used to cut Flanges.
Primary Inspection.(With the help of Bore Gauge & Micrometer we are
measure the Bore of Barrel & Outer Diameter.)
Procedure of Barrel
Honing – (This Process is used to achieve complete Mirror Finishing,
If we put our fingers on barrels than our fingers also Slide.)
Secondary Inspection - With this process we are
Inspecting bore & Center Distance of barrel that
Every thing is ok or not)
Hopper Mounting Cutting & Vent Cutting – (This process is used for material
feeding and Vent Cutting)
Procedure of Barrel
Dowelling – (This process is used to match Gear-Box Side Flange with,
Barrel’s Flange and if it is Twin Barrel than it is necessary
to match Front & Rear Barrel.)
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Drilling Operation – (This process is used to pierce hole in Thermocouple.)
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Nitriding – (It is used to maintain hardness of Barrel.)
We have our own Nitriding furnace at our work place.
Procedure of Barrel
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Third Inspection
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Polishing – (This process is used for polishing barrel to get
proper finishing.)
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Matching – (In this process it is checked that screw is
running properly, in Barrel or not {Free Rotation}.)
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Final Inspection – (After finishing all operations final
inspection is done.)
POINTS WILL ENCOURAGE YOU
TO WORK WITH
POINT: 1 – WE ARE PURCHASING EN-41-B FROM M/S GIRDHARILAL
AGRAWAL:
Actually M/S GIRDHARILAL AGRAWAL is ISO certified dealers of Musco
Company in all over India for the EN-41-B material, RADHEKRISHNA, KOLSITE &
WINDSOR are using their material from them, so here in local market EN-41-B is
available for 60 Rs/kg only but where we are purchasing it for 120 Rs/kg, now
see the difference between ours & others.
POINT: 2 – WITHOUT DOING MATERIAL TEST, WE ARE NOT STARTING THE
WORK:
Which material we are purchasing , it having the 90% of Mild Steel & 10% of
heard metals like aluminum, silicon, nickel , phosphorous , carbon , chromium &
which material other manufacturer purchasing from local vendor it having 95 to
98% of Mild steel & 2 – 5 % of heard metal , so in the comparison of other
manufacturers ,our material is very higher grade, however we are doing test on
it in ISO laboratories, after getting the positive report we are starting the work
on it, either we are not starting the work.
POINT: 3 – BENIFIT OF OUR IN HOUSE CNC MACHINES & NITRIDING FURNACE:
We are having all CNC machines which having of WINDSOR & KOLSITE , so we are
same in machineries , moreover we have our own nitriding furnace, it is so benefit of
us , normally others do nitriding process – total cycle time 96 hrs – 8hrs purging time
(with ammonia gas passed through the furnace & inside atmosphere with totally
ammonia gas & temperature achieve 530ᵒc) + soaking time 72 hrs. (With 530ᵒc &
ammonia gas pressure maintain) + 16 hrs. Cooling time up to 150ᵒc, but we are
maintaining soaking time 80 hrs. Instead of 72hrs to get better nitriding hardness &
case depth. We are maintaining 0.5mm in-depth layer of 64 to 68 HRC in Screw &
Barrel.
Point: 4 – WE ARE PROVIDING TUNGSTEN CARBIDE COATED SCREW PAIR
We would like to inform you & we think you also aware of that the First Zone(Melting
Zone) takes higher or more load in the comparison of other zone, so that's why we do
coating on surface of same zone so it will give you better life against higher filler
loading & other particles.
Point: 5 – WE ARE PROVIDING HSS SLEEVE FITTED BARREL
For Same reason, we provide sleeve on front barrel (which will be fitted on Melting
Zone) which made from "High Speed Steel", it also give better life against wear & tear.
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