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To compete in today's competitive extrusion machines and global market
extruders need to get as much as they can out of their presses which ideally
should be running at maximum speed at maximum temperature possible without
affecting the quality of the
extrusion machines profile. Because the billet
being extruded heats up due to friction in the container as it is pushed
through the press the speed of the push has to be slowed down and this is
typically reliant on skilled operators responding to temperature
measurements at the exit of the die. Related words are for plastic are
thermoplastic bending, sheets, co, plastic machine, plastic, blow molding y,
metal, thermoplastics, twin screw manufactures, used for upvc windows and
concrete.
They uses a highly accurate Pyrometer for any
extrusion machines to
constantly measure the exit temperature and feed this signal automatically
back to the press speed control allowing maximum speed throughout the push
and maximum constant temperature at all times.
The advantages of this are numerous: * Consistent and optimized quality from
the start to the finish of each billet.
* 10-30% more throughput in extrusion machines
.
* Reduced scrap in extrusion machines
.
* Full data collection and reporting on every billet extruded in extrusion
machines
.
* Parameter recall each time a previously used die is loaded which reduces
run-in time for the die.
* Offline remote monitoring of process via Ethernet protocol. Related words
are for plastic are thermoplastic bending, sheets, co, plastic machine,
plastic, blow molding y, metal, thermoplastics, twin screw manufactures,
used for upvc windows and concrete.
The system can be installed on a press in around 3-5 days without
interrupting production and for extruders working with alloys such as 6061 /
6063 pays for itself within a few months.
the expertise and support of cutting tool suppliers from around the world.
"We tried every grade of carbide we came across. We tried several other
types of tools with CBN inserts mounted in them. You name it, we tried it."
Each supplier would bring in the cutting tools it believed would tackle the
Sagittite material. According to Mr. Dill, the testing did not last too
long. "It usually was a matter of minutes before the cutting tool would just
burn up. The best carbide tool available made acceptable chips for three or
four revolutions. After that, the chips would turn into dust. Shear Tool
continued to use these tools for a maximum distance of 5 inches. Most tools
would burn up before that distance."
Personnel a extrusion machines sat down with their product specialists. The
engineers discussed the material and its properties, their problems, as well
as the company's objectives. From that discussion, they decided to try a
this extrusion machines that offers high wear and heat resistance to support
high material removal rates and the machining of abrasive materials
The first test involved an 80-mm diameter face-milling cutter fitted with
five CB50 inserts cutting a scrapped production part composed of the softer
grade. Helical milling parameters for this test were 200 sfm, with a feed of
0.007 inch per edge. "Our extrusion machines side cuts were 0.040 inch, and
our depth of cut was 0.080 inch per revolution. So, for every circular
revolution, we would drop the Z-axis down 0.080 inch."
Extrusion machines were very pleased with the test. While generating large,
shiny chips, the tool successfully removed a total length of 11,663 inches
of material. "That is 2,300 times more than the carbide, which could only
cut 5 inches before burning up..
Halfway through the test, extrusion machines increased the bore depth of cut
to 0.050 inch.
The tool continued to cut without any difficulty. After removing enough
metal to produce a single part, inspection of the tool revealed no wear or
damage to the inserts.
Extrusion machines quickly ordered additional face-milling cutters in 40-
and 60-mm diameters. Along with the 80-mm diameter cutter, these sizes would
accommodate the range of work pieces extrusion machines needed. "This insert
promises us a considerable amount of savings on this project," says Mr.
Dill. "We can mill the parts in 20 to 25 hours, which is 25 percent of the
time it took to EDM them. It also means we no longer have to machine the
carbide electrodes to cut these parts."
According to
extrusion machines tests, the success of the system insert,
along with the helical milling technique, dramatically changed how the
company will process parts now. "This tool has opened up a lot of new
avenues for us.” Currently, the milling operation is a roughing operation,
with the parts receiving surface grinding afterwards. After some more
testing, we think we will be able to double our surface speed and even
eliminate the grinding operation." Related words are for plastic are
thermoplastic bending, sheets, co, plastic machine, plastic, blow molding y,
metal, thermoplastics, twin screw manufactures, used for upvc windows and
concrete.
Extrusion machines already have a number of new application ideas in mind
for this insert and cannot wait to test them all. "Only a few months ago we
were at a point where we didn't think we would ever be able to machine this
extrusion machines efficiently. Now we can cut even the harder grades of
this material. What's more, the insert promises savings in time and tool
life on milling jobs we were already doing successfully for any new
extrusion machines."
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