GB2023658A - Nickel-based Alloy - Google Patents
Nickel-based Alloy Download PDFInfo
- Publication number
- GB2023658A GB2023658A GB7924642A GB7924642A GB2023658A GB 2023658 A GB2023658 A GB 2023658A GB 7924642 A GB7924642 A GB 7924642A GB 7924642 A GB7924642 A GB 7924642A GB 2023658 A GB2023658 A GB 2023658A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nickel
- alloy
- iron
- based alloy
- silicon
- 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.)
- Granted
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 24
- 239000000956 alloy Substances 0.000 title claims abstract description 24
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000011521 glass Substances 0.000 claims abstract description 11
- 238000000465 moulding Methods 0.000 claims abstract description 11
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052796 boron Inorganic materials 0.000 claims abstract description 7
- 229910052742 iron Inorganic materials 0.000 claims abstract description 7
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 7
- 239000010703 silicon Substances 0.000 claims abstract description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 6
- 239000011651 chromium Substances 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract 4
- 239000000463 material Substances 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 3
- 235000019589 hardness Nutrition 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000006060 molten glass Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010112 shell-mould casting Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/058—Alloys based on nickel or cobalt based on nickel with chromium without Mo and W
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The invention relates to a nickel- based alloy for use in moulds for moulding glass, and particularly in top tooling applications and for parts subject to high wear. The alloy, excluding incidental impurities, comprises 3-14 wt% chromium 2-9 wt% silicon 7-26 wt% iron 0.7-3 wt% boron the balance being nickel. p
Description
SPECIFICATION
Nickel-based Alloy
The present invention relates to a nickel-based alloy for use in moulds for moulding glass, and particularly in top tooling applications and for parts subject to high wear.
The moulding of glass vessels and containers e.g. bottles and jars, is generally carried out in two stages. In the first stage a gob of molten glass is formed into a rough shape, usually by pressing the gob into a two-part split mould by means of a plunger. The plunger is then retracted and the mould opened to release the crude glass moulding. In order to produce the neck of the vessel the mould may be provided with neck-rings.
In the second stage, the hot crude glass moulding is placed in a further mould having the shape of the finished vessel and the softened glass blown against the inner walls of the mould by air pressure.
The finished glass moulding is then removed from the mould and cooled in a controlled manner.
One of the problems encountered when speeding up production speeds of such moulding operations is that excessive wear occurs on certain parts of the moulding apparatus e.g. the plunger, the neck rings, guide rings, sleeves, guide plates and funnel plates. Therefore special hard materials must be used for such parts; whereas the moulds themselves are generally made of cast iron.
Moreover, it is necessary that such materials have a high thermal conductivity since it is usually important to maintain a low mould temperature so as to prevent the molten glass sticking. Thus, the plunger is usually hollow and provided with means to blow in cooling air. If the plunger is not cooled sufficiently the glass will drag and even stick to it.
The material should have a high ductile strength and resist deformation. It should also be nonabrasive and capable of being polished to a fine finish.
Conventionally such a material has been provided by a nickel-based alloy containing boron and silicon, and having a high nickel content. Such an alloy is expensive and has generally been employed as a coating spray-welded onto cast-iron. This is disadvantageous in that the interface between the alloy and the cast-iron inhibits heat conduction and may give rise to problems of bonding; and in that alterations in the shape of the mould and tooling cannot be easily achieved.
It is an object of the present invention to mitigate these disadvantages and provide suitable alloy of low cost which may be cast and machined to shape.
The present invention provides a nickel-based alloy for use in moulds for glass moulding, which excluding incidental impurities consists essentially of 3-14, preferably 5-10, more preferably 6-8 wt % chromium; 2-9, preferably 3-6, more preferably 4-5 wt % silicon; 7-26, preferably 10-1 6, more preferably 12-14 wt % iron; 0.7-3 preferably 1-2.5, more preferably 1.2-2 wt % boron; the balance being nickel.
Thus, the present invention seeks to provide a relatively low nickel content so as to keep down costs, and to provide a relatively high iron content so as to improve machinability.
The alloy has good castability, particularly by the shell moulding and wax loss techniques and may be machined to size.
The alloy may also be provided in a powder form suitable for building-up by spray-welding processes. Thus, parts produced from the alloy may be simply modified by grinding down and/or building-up as appropriate.
in view of its high ductile strength, hardness and good wear properties, the alloy is particularly useful for top tooling applications in the first stage of glass moulding where high rates of wear are encountered.
An embddiment of the invention will now be described by way of example only.
Example
Chromium, iron and nickel were melted together with silicon and boron under vacuum in an electric furnace so as to produce a homogeneous alloy which on cooling had an average hardness of
H.V. 39 K.g.
Chemical analysis showed that the constituents were present in the following percentages by weight.
C Cr Si Fe Ni B
0.06 6.85 4.42 12.98 balance 1.50
The alloy was relatively free from impurities, carbon being the major impurity.
Measurements of various samples of the alloy showed hardnesses in the range of 385-395 K.G.
36-/38-Rockwell C Scale.
The alloy had good thermal conductivity, high ductile strength good wear properties, was non abrasive and could be polished to a fine finish. Further, the alloy was particularly suitable for casting and machining, and could be sprayed-welded.
Claims (6)
1. A nickel-based alloy which excluding incidental impurities comprises 3-14 wt % chromium
2-9 wt % silicon 7-26 wt % iron 0.7-3 wt % boron the balance being nickel.
2. An alloy according to claim 1, which comprises 5-10 wt % chromium
3-6 wt % silicon 10-16wt%iron 1-2.5 wt % boron the balance being nickel.
3. An alloy according to claim 2, which comprises
6-8 wt % chromium
4-5 wt % silicon
12-14 wt % iron 1.2-2.0 wt % boron the balance being nickel.
4. A nickel-based alloy substantiaily as described in the Example.
5. A part for use in glass moulding apparatus and formed of the alloy according to any preceding claim
6. A top tooling part according to claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7924642A GB2023658B (en) | 1978-05-08 | 1979-07-16 | Nickel-based alloy |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1814578 | 1978-05-08 | ||
| GB7924642A GB2023658B (en) | 1978-05-08 | 1979-07-16 | Nickel-based alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2023658A true GB2023658A (en) | 1980-01-03 |
| GB2023658B GB2023658B (en) | 1982-06-09 |
Family
ID=26253197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7924642A Expired GB2023658B (en) | 1978-05-08 | 1979-07-16 | Nickel-based alloy |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2023658B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2202861B (en) * | 1987-03-30 | 1991-07-17 | Owens Illinois Glass Container | Alloys and the production of formed members |
-
1979
- 1979-07-16 GB GB7924642A patent/GB2023658B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2202861B (en) * | 1987-03-30 | 1991-07-17 | Owens Illinois Glass Container | Alloys and the production of formed members |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2023658B (en) | 1982-06-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |