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Pivot Punch accepts all of these major credit cards.
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Technical Data
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Click on link below to go to that section:
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Feasibility of Piercing Ratio Holes In Various Types & Thickness of Material
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Using Pivot Whipsleeve Straight Ground Punches:
While it has been proven that any material that has a shearing strength of 50,000 psi or less can be satisfactorily punched with Pivot Whipsleeve Straight Ground Punches (which have a compressive strength of 405,250 psi), it is desirable to know the normal expectant life of the punch.
Following is a formula that is based upon our experience as a conservative estimate, to determine if a hole can be safely pierced in any specific material and, if so, to then determine the minimum potential production in thousands of holes per grind.
(1) To determine the shearing pressure required as compared to the compressive strength of the punch (resultant factor), use this formula:
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| R = |
405,250 x D |
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4 x T x S
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| 405,250 = |
Compressive strength, Pivot Whipsleeve, Straight Ground Punches |
| D = |
Diameter of hole to be pierced |
| T = |
Thickness of material |
| S = |
Shearing strength of material |
| R = |
Resultant factor |
If the resultant factor (R) is one (1) or greater, the hole can
be safely pierced. See examples below:
Examples of Formula:
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Q:
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Pierce .06 dia. holes through .12 thick soft
carbon steel (1020)?
| R = |
405,250 x D |
R = |
405,250 x .06 |
R = 1.15 |
| 4 x T x S |
4 x 12 x 44,000 |
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A:
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Yes (R exceeds 1.0). Expected minimum production: 15-25,000
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Q:
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Pierce .09 dia. holes through .09 dia. stainless steel?
| R = |
405,250 x D |
R = |
405,250 x .09 |
R = 1.05 |
| 4 x T x S |
4 x .09 x 100,000 |
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A:
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Yes (R exceeds 1.0). Expected minimum production: 15-25,000
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Q:
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Pierce .25 dia. holes through .375 dia. hard brass sheet?
| R = |
405,250 x D |
R = |
405,250 x .06 |
R = 1.69 |
| 4 x T x S |
4 x .375 x 40,000 |
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A:
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Yes (R exceeds 1.0). Expected minimum production: 100-500,000
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Note: Obviously the above factors are based upon proper alignment and normal
die construction including adequate stripping pressure.
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| 1.00 |
15,000 - 25,000 |
| 1.25 |
25,000 - 50,000 |
| 1.50 |
70,000 - 100,000 |
| 1.75 |
500,000 - 900,000 |
| 2.00 |
1,000,000 + |
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| Carbon Steel (1020) Soft annealed steel |
44,000 |
| Carbon Steel (1018) Cold rolled steel |
55,000 |
| Nickel Steel (2320) |
98,000 |
| Nickel Chromium Steel (3140) |
130,000 |
| Stainless Steel |
100,000 |
| Structural Steel |
45,000 |
| Aluminum Sheet, soft |
15,000 |
| Aluminum Sheet, half hard |
19,000 |
| Aluminum Sheet, hard |
25,000 |
| Brass Sheet, soft |
30,000 |
| Brass Sheet, half hard |
35,000 |
| Brass Sheet, hard |
40,000 |
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Tondra-Genic™ Treatment
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Pivot Punch Corporation is introducing
TONDRA-GENIC™ TREATMENT which is a new process that can be applied to all of our high speed tool steel products.
TONDRA-GENIC™ TREATMENT is a unique combination of two processes, Pivot's exclusive
Tondra treatment and a specially controlled cryogenic treatment.
The Tondra Treatment portion of this new process produces an extremely hard case of 72-75 Rockwell for the ultimate in resistance to abrasion, firing, and galling. This process also adds lubricity to the surface which reduces stripping pressure. The cryogenic treatment portion produces maximum tool hardness and stability which results in greater toughness and shock resisting quality.
When TONDRA-GENIC™ is applied to piercing tools a 600% increase in tool life is not uncommon.
The price for this unique process is 20% of our catalog prices, with a minimum charge of $5.00 for each item.
For increased productivity specify
TONDRA-GENIC™ TREATMENT on your next order from Pivot.
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Coatings
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Titanium Nitride (TIN)
Is an excellent general purpose coating for punches and dies
to protect your tools from wear. TIN is a good choice for wear parts requiring
resistance to abrasive and adhesive wear.
(This coating is recognized by its gold appearance.)
Titanium Carbonitride (TICN)
Is a high performance coating for forming and punching tools that encounter excessive
mechanically stressed cutting and forming edges, and were high speed
and feed rates are desired.
(This coating is recognized by its blue gray appearance.)
Hard Lube
Is a specialized multi layered coating. The base is a wear protective coating that
is covered with a lubricative outer layer. This coating is most beneficial in forming
operations.
(This coating is recognized by its black gray appearance.)
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Steel Comparisons
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New grades: PM 3 and PM 15
- PM 3 - great toughness
- Toughness approaching S7
- Wear resistance greater than M2
- Use for impact situations instead of S7, for high toughness without giving up wear or coatability
- PM 15 - great wear
- 50% - 100% longer wear life than PM
10
- Same hardness, heat treatment as PM
10
- Wear upgrade from PM 10, or replace FerroTiC, or use where carbide is too brittle
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Pivot PM 1O steel punches and dies take advantage of the unique properties of this Crucible Particle Metallurgy steel. It is designed with a tough, air hardening base analysis with added high carbon and vanadium. This provides
PM 1O with a combination of exceptionally good wear resistance, toughness and strength for cold and warm work applications.
Standard items available in Pivot Catalog #4000.
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| PM 15 |
62 |
125 |
PM 15 |
62 |
10 |
| PM 10 |
63 |
90 |
PM 10 |
63 |
15 |
| PM 10 |
60 |
75 |
PM 10 |
60 |
25 |
| D2 |
62 |
10 |
D2 |
62 |
17 |
| M2 |
62 |
17 |
M2 |
62 |
17 |
| PM M4 |
64 |
31 |
PM M4 |
63 |
30 |
| A2 |
60 |
5 |
A2 |
60 |
36 |
| PM 3 |
60 |
22 |
PM 3 |
60 |
75 |
| S7 |
57 |
2 |
S7 |
57 |
108 |
| *Reciprocal of the
wear rate in unlubricated crossed-cylinder wear test in contact with
rotating tungsten carbide cylinder. |
*Standard size
Charpy Test specimen and notch depth with ½ inch notch radius. |
| GRADE |
PM 15 |
PM 10 |
PM 10 |
D2 |
M2 |
PM M4 |
A2 |
PM 3 |
S7 |
| HRC |
62 |
63 |
60 |
62 |
62 |
64 |
60 |
60 |
57 |
Note: This information is to be used as a
guideline for material selection to help solve your punching requirements.
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