US2166341A - Machinable plastic zinc alloy - Google Patents
Machinable plastic zinc alloy Download PDFInfo
- Publication number
- US2166341A US2166341A US170855A US17085537A US2166341A US 2166341 A US2166341 A US 2166341A US 170855 A US170855 A US 170855A US 17085537 A US17085537 A US 17085537A US 2166341 A US2166341 A US 2166341A
- Authority
- US
- United States
- Prior art keywords
- per cent
- zinc
- alloy
- zinc alloy
- bismuth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229910001297 Zn alloy Inorganic materials 0.000 title description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 11
- 239000011701 zinc Substances 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 229910045601 alloy Inorganic materials 0.000 description 10
- 239000000956 alloy Substances 0.000 description 10
- 229910052797 bismuth Inorganic materials 0.000 description 9
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 9
- 229910052725 zinc Inorganic materials 0.000 description 9
- 229910052802 copper Inorganic materials 0.000 description 8
- 239000010949 copper Substances 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 6
- 239000011777 magnesium Substances 0.000 description 6
- 229910052749 magnesium Inorganic materials 0.000 description 6
- 238000007792 addition Methods 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- 229910052793 cadmium Inorganic materials 0.000 description 4
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000001627 detrimental effect Effects 0.000 description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 241000282461 Canis lupus Species 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001152 Bi alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- OJVABJMSSDUECT-UHFFFAOYSA-L berberin sulfate Chemical compound [O-]S([O-])(=O)=O.C1=C2CC[N+]3=CC4=C(OC)C(OC)=CC=C4C=C3C2=CC2=C1OCO2.C1=C2CC[N+]3=CC4=C(OC)C(OC)=CC=C4C=C3C2=CC2=C1OCO2 OJVABJMSSDUECT-UHFFFAOYSA-L 0.000 description 1
- 244000221110 common millet Species 0.000 description 1
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910021652 non-ferrous alloy Inorganic materials 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C18/00—Alloys based on zinc
- C22C18/02—Alloys based on zinc with copper as the next major constituent
Definitions
- Ms 58 The only known non-ferrous alloy which posses'ses these properties is Ms 58, a brass containing 58 per cent copper, so-called automaticmachine brass.
- Bismuth in amounts of 0.1 tol per cent is sufllcient for obtainingquite short chips and has a less detrimental influence on ductility, but ,still the plasticity and the mechanical properties of an alloy of copper and zinc with such percentages of bismuth are such that the alloy can be used in practice but still is not quite satisfactory.
- the remainder or base is fine zinc poor in iron and cadmium and practically free from magnesium and tin.
- Manga- Copper nese Bismuth Alloy (1) has given the best results with respect to working and to machining in an automatic a slight addition of aluminium, up to 0.15 per cent. This amount is not detrimental 'in other respects and the alloy can now be melted in an iron container.
- a machinable plastic zinc alloy containing from a small but efiective amount up to 5 per cent of copper, 0.1 to 1 per cent of bismuth, 0.1 to 1 per cent of manganese, the remainder substantially all zinc, and characterized by resistivity to producing short and Spurting chips when being machined.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
Description
Patented July 18, 1939 UNITED STATES PATENT OFFICE MACHINABLE PLASTIC ZINC ALLQY Arthur Burkhardt, Berlin-Lichterfelde, and Wolf gang Wolf, Magdeburg, Germany, assignors to Georg von Giesches Erben, Breslau, Germany, a corporation of Germany No Drawing. Application October 25, 1937, Se-
rial N o. 1937 4 Claims.
face finish is given to the work, but, above all,
that the chips'are short and spurting.
The only known non-ferrous alloy which posses'ses these properties is Ms 58, a brass containing 58 per cent copper, so-called automaticmachine brass.
It is an object of our invention to provide a substitute for Ms 58 which has similar properties.
To this end, we provide an alloy containing 2 to 5 per cent copper, 0.1 to 1 per cent bismuth, 0.1 to 1 percent manganese,- and fine zinc poor in iron and cadmium and practically free from magnesium and tin.
In the search for substitutes for Ms 58, it has been attempted to machine on automatic ma= chines ,zinc and aluminium alloys of the usual kind. This was a failure because the chips of such alloys are .curly and bulky and call themselves about the tool and the work.
An alloy which is to be a proper substitute for Ms 58 must deliver short and spurting chips on;
the same machines and underthe same cutting conditions as M5 58, and its finish must not be less perfectnor the life of the tool shorter.
Investigations showed that for obtaining short and spurting chipsfrom a zinc alloy, it is necessary to make additions which in liquid condition are only partly miscible with zinc.
Such-additions are lead, thallium, and bismuth. While they had a favorable influence on the formation of the chips, it was found that they were very detrimental with respect to intercrystalline corrosion. Thus, an addition of 0.1 per cent lead or bismuth to the well known die-casting alloy having 4 per cent aluminium, 3 per cent copper, 0.04 per cent magnesium, and zinc as the remainder, caused a growth of more than 7 per cent in length.
alloys free from aluminium and magnesium, with up to 5 per cent copper, and with addition of lead or bismuth do not suffer from intercrystalline corrosion and possess mechanical properties that they. can be used instead of Ms 58.
It was found, however, that the-percentage of lead must be 3 to 5 per cent in order to effect the desired formation of short, spurting chips, and
this has the drawback of greatly reducing the 170,855. In Germany The surprising discovery was made that zinc January 5,
ductility or the alloy so that it cannot be worked into bars or rods by extrusion.
Bismuth in amounts of 0.1 tol per cent is sufllcient for obtainingquite short chips and has a less detrimental influence on ductility, but ,still the plasticity and the mechanical properties of an alloy of copper and zinc with such percentages of bismuth are such that the alloy can be used in practice but still is not quite satisfactory.
We have made the surprising discovery that by' adding 0.1 to 1 per cent manganese to a bismuthcontaining copper-zinc alloy its plasticity and mechanical properties are improved, and the properties of its chips are not deteriorated.
The following table gives some examples of alloys embodying our invention.
In all alloys, the remainder or base is fine zinc poor in iron and cadmium and practically free from magnesium and tin.
Composition. in per cent Manga- Copper nese Bismuth Alloy (1) has given the best results with respect to working and to machining in an automatic a slight addition of aluminium, up to 0.15 per cent. This amount is not detrimental 'in other respects and the alloy can now be melted in an iron container.
We'claim: 1. A machin'able plastic zinc alloy containing from a small but effective amount up- 'to'5 per 1 cent of copper, from 0.'1 t0 v1 per cent ofv bismuth,
from 0.1 to 1 per cent of manganese, and time zinc poor in iron and cadmium, and practically tree from magnesium and tin, as the remainder.
2. A machinable plastic zinc alloy containing from 2 to 5 per cent of copper, from 0.1 to 1 per cent of bismuth, from 0.1 to 1 per cent of manganese, and fine zinc poor in iron and cadmium, and practically tree from magnesium and tin. as the remainder.
3. A machinable plastic zinc alloy containing from a small but efiective amount up to 5 per cent of copper, 0.1 to 1 per cent of bismuth, 0.1 to 1 per cent of manganese, the remainder substantially all zinc, and characterized by resistivity to producing short and Spurting chips when being machined.
ARTHUR BURKHARDT. WOLFGANG WOLF.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2166341X | 1937-01-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2166341A true US2166341A (en) | 1939-07-18 |
Family
ID=7988184
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US170855A Expired - Lifetime US2166341A (en) | 1937-01-05 | 1937-10-25 | Machinable plastic zinc alloy |
Country Status (1)
Country | Link |
---|---|
US (1) | US2166341A (en) |
-
1937
- 1937-10-25 US US170855A patent/US2166341A/en not_active Expired - Lifetime
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