CN105728700A - Casting technique for brass electrode holder - Google Patents
Casting technique for brass electrode holder Download PDFInfo
- Publication number
- CN105728700A CN105728700A CN201610085771.4A CN201610085771A CN105728700A CN 105728700 A CN105728700 A CN 105728700A CN 201610085771 A CN201610085771 A CN 201610085771A CN 105728700 A CN105728700 A CN 105728700A
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- casting
- casting technique
- brass electrode
- electrode seat
- technique
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
- B22D25/04—Casting metal electric battery plates or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/088—Feeder heads
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The invention discloses a casting technique for a brass electrode holder. The casting technique comprises a horizontal vertical casting semi-permanent mold casting technique and a horizontal climbing inclined sand mold casting technique; the horizontal vertical casting semi-permanent mold casting technique is used for volume production, and the horizontal climbing inclined sand mold casting technique is used for a brass electrode holder of which the plate length is less than 1800 mm, the width is less than 1400 mm and the thickness is less than 160 mm. According to the casting technique disclosed by the invention, the brass electrode holder is manufactured by adopting two different techniques, so that the casting technique is reasonable, the yield is high, and product quality is high.
Description
Technical field
The present invention relates to electrode tip holder manufacturing technology field, the casting technique of especially a kind of brass electrode seat.
Background technology
Electrode tip holder is the strength member on large-scale strip steel flash welder, has several version.The trade mark of electrode tip holder is ZCuZn38, for the basis brass existed unique in GB.Although basis brass has certain intensity, hardness and good casting character, but wearability, anti-corrosion energy, especially the corrosion resisting property of flowing seawater, steam and mineral acid is poor, the relative low price of brassing, being commonly used to manufacture general small-scale structure part and decoration foundry goods, it is comparatively rare for doing this large thick-wall foundry goods with basis brass.Shrinking due to the body of pyrite and linear shrinkage is all relatively big, for large thick-wall foundry goods, abundant feeding and prevent the problems such as deformation from all should cause enough attention, it should be further noted that get rid of the oxide inclusion produced in casting process.
For copper alloy long shaped plate class foundry goods, generally adopt semi-chilled mould casting technique, then quality is more reliable, although and plate-like electrode tip holder is not belonging to long shaped plate class foundry goods, but shape is relatively simple, adopt semi-chilled mould casting technique, similarly help to the abundant feeding of foundry goods, improve product yield, and make cast(ing) surface have higher tensile strength and hardness, can improve the service life of foundry goods, therefore to batch or oversupplied goods, by semi-chilled mould casting technique, there is certain advantage.So-called semipermanent mold, refers on foundry goods that rising head part more than plane and the following running gate system part of foundry goods lower plane all adopt sand mold, and adopts metal mold around foundry goods.Semipermanent mold, except spelling case and be convenient, is devaned also very convenient, as long as watering, after rising head sand mold is ready to, can shortening the production cycle.
Being four sides wallboard splicing form by semimetallic structural design, lock with locking device, two end plates size can be adjusted according to puncture deformation.In order to make electrode tip holder obtain abundant feeding, in the U-type groove of electrode tip holder bottom, arrange one shape cast iron chill.Being provided with two, rising head of circle itself in the big plane of electrode tip holder, adopt and first close the bottom gating opened afterwards, and be provided with sand drainage screen, pouring and riser systems adopts water-glass sand dry type.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, it is proposed to the casting technique of a kind of brass electrode seat, reasonable in design, simple to operate, save cost.
In order to realize foregoing invention purpose, the present invention provides techniques below scheme: the casting technique of a kind of brass electrode seat, including horizontally-arranged upright casting semi-chilled mould casting technique and horizontally-arranged inclination climbing casting sand mould casting technique, described horizontally-arranged upright casting semi-chilled mould casting technique is used for producing in batches, described horizontally-arranged inclination climbing casting sand mould casting technique is used for plate length less than 1800mm, width less than 1400mm, the thickness brass electrode seat less than 160mm.
Further, in described horizontally-arranged upright casting semi-chilled mould casting technique, circle rising head is of a size of Φ 180mm, and Riser Dimensions height is 200mm..
Further, the operating temperature after semipermanent mold drying is 150 DEG C～190 DEG C, and copper water pouring temperature is 1020 DEG C.
Further, in described horizontally-arranged inclination climbing casting sand mould casting technique, for tilting 10 °～15 ° climbing cast.
Further, described brass electrode seat includes plate-like pyrite motor cabinet and belt chamber's brass electrode seat.
Further, described belt chamber brass electrode seat adopts horizontally-arranged upright casting sand casting process.
Compared with prior art, the invention have the advantages that two kinds of different process methods of employing realize making brass electrode seat, rational technology, yield rate is high, good product quality.
Accompanying drawing explanation
Fig. 1 is template block type electrode seat foundry goods sketch；
Fig. 2 semi-chilled mould casting process diagram；
Fig. 3 foundry goods puncture deformation sketch；
Fig. 4 I type electrode tip holder semi-chilled mould casting solidification simulation sketch；
Fig. 5 plate-like electrode tip holder side upright casting process diagram；
The horizontally-arranged inclination climbing pouring technology sketch of the plate-like electrode tip holder of Fig. 6；
Fig. 7 II type electrode tip holder foundry goods sketch；
Fig. 8 II type electrode tip holder sand casting solidification simulation sketch (a) solidifies and solidifies late period mid-term (b)；
III type electrode tip holder foundry goods sketch of Fig. 9 belt chamber；
III type electrode tip holder sand casting process sketch of Figure 10 belt chamber；
Figure 11 belt chamber shape III type electrode tip holder solidification simulation sketch.
Detailed description of the invention
Describing the present invention below in conjunction with embodiment, the description of this part is only exemplary and explanatory, and protection scope of the present invention should not have any restriction effect.
Embodiment 1
The semi-chilled mould casting technique of plate-like electrode tip holder
The principle technique of 1.1 electrode tip holder semi-chilled mould castings
Situation according to the cast of electrode tip holder initial workpiece, it was noted that owing to the body of pyrite shrinks very big, and this foundry goods is very long and thicker, occurring that puncture deforms in foundry goods two sides, middle bosom reaches shown in 7mm, Fig. 3, successively decreasing to two ends, symmetrically cambered surface distribution, to consider this factor when metal pattern designs.
The typical case of 1.2 electrode tip holder semi-chilled mould castings
Electrode tip holder I type is that π shape is plate-like, as it is shown in figure 1, material is basis brass ZCuZn38, maximum gauge is 157mm.This batch of electrode tip holder quantity is 8, and the quality of single-piece foundry goods is 850kg.This type electrode tip holder is approved product, and has follow-up order, therefore adopts semi-chilled mould casting technique, and operating principle figure is as shown in Figure 2.
Puncture deformation according to electrode tip holder I type, has done technique adjustment to the two ends plate washer size of semipermanent mold.Additionally, it is observed that riser feeding has degree more than needed, the whole cast when semipermanent mold of this foundry goods, process of setting have been carried out solidification simulation analysis by us, shown in Fig. 4, it is determined that circle rising head is of a size of Φ 180mm, and Riser Dimensions height is 200mm.This product casting quality is 830kg, and rising head quality is 104kg, and running gate system quality is 84kg, and casting quality is 1020kg, and product yield is 81.4%.
Embodiment 2
The sand casting process of plate-like electrode tip holder
The principle technique of 2.1 plate-like electrode tip holder sand casting
Plate-like electrode tip holder is when adopting sand casting, and its pouring position can have two schemes, and one is electrode tip holder side upright casting technique, as shown in Figure 5；The horizontally-arranged inclination climbing pouring technology of another kind of electrode tip holder, as shown in Figure 6；Two schemes can ensure product quality, but the former to adopt four casees moulding, and to arrange very big loam core, troublesome poeration, and the latter adopts two-part mo(u)lding, does not need to arrange loam core, operates very easy, has obvious advantage, therefore have employed the latter.
The calculating of rising head when the horizontally-arranged inclination climbing of 2.2 plate-like electrode tip holders is poured into a mould
By shape, plate-like electrode tip holder can regard sketch plate class foundry goods as, existing rising head convenient design method, at plate length L less than 1800mm, width m is less than 1400mm, when thickness T is less than 160mm, is adopting horizontally-arranged inclination climbing casting program, and when the side of foundry goods arranges rising head, the relation of sketch plate class casting pressing port form parameter and cast shape parameter is in Table 1.
In table: L is casting length, m is width cast, and T is foundry goods maximum gauge, and a is oval rising head root depth, and b is oval rising head root width, and h is oval riser height, and n is rising head number.
Note: (1) h generally should be greater than 100mm；
(2) whole casting mold is raised in rising head direction, tilts 10～15 ° of cast.
Riser calculating, accounting method are as follows:
1. according to cast shape parameter L, corresponding coefficient k 1 is found, then rising head form parameter a=k2 L or a=k2 L/n；
2. according to cast shape parameter T, corresponding coefficient k 2 is found, then rising head form parameter b=k2 T；
3. according to cast shape parameter m, corresponding coefficient k 3 is found, then rising head form parameter h=k3 m.
4. according to a/b, the condition whether meeting in table is adjusted；
5. according to L, product yield is adjusted.
The typical case of 2.2 plate-like electrode tip holder sand casting
Large-scale plate-like II type electrode tip holder, as shown in Figure 7, material is ZCuZn38, length L=1524mm, width m=456mm, maximum gauge T=125mm.Adopt horizontally-arranged inclination climbing casting program.Rising head is arranged on the side of foundry goods, and whole casting mold is raised in rising head direction, tilts 10 °～15 ° climbing cast.For large-scale plate-like electrode tip holder, in the scope of length L=1550mm, arranging n=1 rising head is possible.
Check in from table 1: as L=1524mm, kl=0.35；As T=125mm, k2=1.20～1.30；As m=456mm, k3=0.40～0.50.
Riser calculating:
A=kl L=0.35 × 1524mm=533mm, takes a=530mm；
B=k2 T=(1.20～1.30) × 125mm=150mm～163mm, takes b=160mm；
H=k3 m=(0.40～0.50) × 456mm=182mm～228mm, takes h=210mm.
Rising head is adjusted:
A/b=530/160=3.3, is unsatisfactory for the condition of 2.2～3.0, improper；
Adjust Riser Dimensions: take a=480mm；B=180mm；Riser height is constant.A/b=480/180=2.66, meets the condition of 2.2～3.0, properly；
Casting quality is 795kg, and rising head quality is 250kg, and running gate system quality is 70kg, and casting quality is 1115kg, and product yield is 71.3%, meets the condition of 65%～75%, properly.
By above scheme, when sand casting, I type electrode tip holder being carried out solidification simulation, as shown in Figure 8, Feeder Design is reasonable.Also demonstrate that product quality is good after final processing.
Embodiment 3
I type electrode tip holder in example 1 can also adopt sand mould casting method to produce, and Feeder Design can carry out according to the rising head convenient design method of sketch plate class copper-alloy casting equally.
From table 1: as L=1524mm, kl=0.35；As T=157mm, k2=1.20～1.30；As m=427mm, k3=0.40～0.50.
Riser calculating:
A=kl L=0.35 × 1524mm=533mm, takes a=530mm；
B=k2 T=(1.20～1.30) × 157mm=188mm～204mm, takes b=200mm；
H=k3 m=(0.40～0.50) × 427mm=171mm～214mm, takes h=190mm.
Rising head is adjusted:
A/b=530/200=2.65, meets the condition of 2.2～3.0, properly；
Casting quality is 850kg, and rising head quality is 290kg, and running gate system quality is 70kg, and casting quality is 1210kg, and product yield is 70.3%, meets the condition of 65%～75%, properly.
Embodiment 4
The sand casting process of belt chamber's electrode tip holder
In order to alleviate the quality of electrode tip holder to reduce cost, people are also contemplated that the electrode tip holder of belt chamber, its feature is by electrode tip holder lateral layout concavity cell structure, upper plane adds two square pits, as shown in Figure 9, owing to cast shape becomes complex, it is impossible to adopt semi-chilled mould casting technique, then more can play its strong point with sand casting process.
The principle technique of 4.1 belt chamber electrode tip holder sand casting
The determination of belt chamber's electrode tip holder pouring position.This product, when sand casting, can have two kinds of positions to select: one be big plane upward, above set rising head, chill is underlying, loam core side, as shown in Figure 10；Another kind is that foundry goods is edge-on, is similar to shown in Fig. 5, wide be 122 solid plane upward, above set rising head, chill side, loam core is underlying.Through solidification simulation analysis, former scheme is better.
The typical case of 4.2 belt chamber electrode tip holder sand casting
Example 4, III type electrode tip holder is the electrode tip holder of belt chamber, and as shown in Figure 10, material is basis brass ZCuZn38, length L=1524mm, width m=419mm, and foundry goods thickest is 122mm.In order to formation temperature gradient is in order to feeding, still retain the chill in U-lag, all the other chills are no longer set so that operating.Adopt and first close the running gate system opened afterwards, pour into from the down gate of 3 Φ 35mm, running gate system arranges drainage screen.Upward, two square pits in upper plane are by top box sand self-assembling formation, and side is formed spill cell structure by a monoblock loam core for the big plane of foundry goods.3 square risers are set, by means of solidification simulation analysis, the size and location of adjusted rising head at two square pit gap locations, make foundry goods can obtain abundant feeding, as shown in Figure 11, the rising head root finally determined is of a size of 220mm × 120mm, and riser height is of a size of 200mm.
Casting quality is 700kg, and rising head quality is 166kg, and running gate system quality is 70kg, and casting quality is 936kg, and product yield is 74.8%.After processing, product quality is satisfactory.
Conclusion
(1) for plate-like electrode tip holder, if during batch production, horizontally-arranged upright casting semi-chilled mould casting technique can be adopted；If produce on a small quantity, then can adopt horizontally-arranged inclination climbing casting sand mould casting technique.
(2) plate-like electrode tip holder is when adopting horizontally-arranged upright casting semi-chilled mould casting technique, it is notable that there will be the puncture deformation of symmetrically cambered surface distribution in the two sides of electrode tip holder, to cause enough attention when metal die designs.
(3) plate-like electrode tip holder is when adopting horizontally-arranged inclination climbing casting sand mould casting technique, Feeder Design can carry out according to the rising head convenient design method of sketch plate class copper-alloy casting, both can guarantee that casting quality and higher product yield can have been obtained, moreover it is possible to having improved technological design efficiency.
(4) horizontally-arranged upright casting sand casting process is generally adopted for belt chamber's electrode tip holder, adopting solidification simulation analytical technology, Feeder Design can being optimized, thus improving product yield.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (6)
1. the casting technique of a brass electrode seat, it is characterized in that: include horizontally-arranged upright casting semi-chilled mould casting technique and horizontally-arranged inclination climbing casting sand mould casting technique, described horizontally-arranged upright casting semi-chilled mould casting technique is used for producing in batches, described horizontally-arranged inclination climbing casting sand mould casting technique is used for plate length less than 1800mm, width less than 1400mm, the thickness brass electrode seat less than 160mm.
2. the casting technique of brass electrode seat as claimed in claim 1, it is characterised in that: in described horizontally-arranged upright casting semi-chilled mould casting technique, circle rising head is of a size of Φ 180mm, and Riser Dimensions height is 200mm.
3. the casting technique of brass electrode seat as claimed in claim 1 or 2, it is characterised in that: the operating temperature after semipermanent mold drying is 150 DEG C～190 DEG C, and copper water pouring temperature is 1020 DEG C.
4. the casting technique of brass electrode seat as claimed in claim 1, it is characterised in that: in described horizontally-arranged inclination climbing casting sand mould casting technique, pour into a mould for tilting 10 °～15 ° climbings.
5. the casting technique of brass electrode seat as claimed in claim 1, it is characterised in that: described brass electrode seat includes plate-like pyrite motor cabinet and belt chamber's brass electrode seat.
6. the casting technique of brass electrode seat as claimed in claim 5, it is characterised in that: described belt chamber brass electrode seat adopts horizontally-arranged upright casting sand casting process.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610085771.4A CN105728700A (en) | 2016-02-15 | 2016-02-15 | Casting technique for brass electrode holder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610085771.4A CN105728700A (en) | 2016-02-15 | 2016-02-15 | Casting technique for brass electrode holder |
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| CN105728700A true CN105728700A (en) | 2016-07-06 |
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| CN201610085771.4A Pending CN105728700A (en) | 2016-02-15 | 2016-02-15 | Casting technique for brass electrode holder |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08229631A (en) * | 1995-02-23 | 1996-09-10 | Mitsubishi Heavy Ind Ltd | Casting mold for copper alloy |
| CN201405057Y (en) * | 2009-05-14 | 2010-02-17 | 扬州峰明金属制品有限公司 | Declining type pouring device of casting piece |
| CN102069160A (en) * | 2011-01-31 | 2011-05-25 | 中冶京诚工程技术有限公司 | Ultra-large rectangular ingot blank sloping casting combined manufacturing device and method |
| CN102240779A (en) * | 2011-08-05 | 2011-11-16 | 烟台鲁宝有色合金有限公司 | Process for manufacturing copper alloy in narrow crystallization temperature range |
| CN102873309A (en) * | 2012-09-15 | 2013-01-16 | 浙江灿根机械制造有限公司 | Casting process for large-scale copper alloy sand mould |
| CN203448631U (en) * | 2013-07-25 | 2014-02-26 | 华远善 | Casting sand box capable of obliquely casting |
-
2016
- 2016-02-15 CN CN201610085771.4A patent/CN105728700A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08229631A (en) * | 1995-02-23 | 1996-09-10 | Mitsubishi Heavy Ind Ltd | Casting mold for copper alloy |
| CN201405057Y (en) * | 2009-05-14 | 2010-02-17 | 扬州峰明金属制品有限公司 | Declining type pouring device of casting piece |
| CN102069160A (en) * | 2011-01-31 | 2011-05-25 | 中冶京诚工程技术有限公司 | Ultra-large rectangular ingot blank sloping casting combined manufacturing device and method |
| CN102240779A (en) * | 2011-08-05 | 2011-11-16 | 烟台鲁宝有色合金有限公司 | Process for manufacturing copper alloy in narrow crystallization temperature range |
| CN102873309A (en) * | 2012-09-15 | 2013-01-16 | 浙江灿根机械制造有限公司 | Casting process for large-scale copper alloy sand mould |
| CN203448631U (en) * | 2013-07-25 | 2014-02-26 | 华远善 | Casting sand box capable of obliquely casting |
Non-Patent Citations (1)
| Title |
|---|
| 杨为勤，谢国峰: "铜合金异形厚壁铸件的铸造工艺研究", 《特种铸造及有色金属》 * |
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Application publication date: 20160706 |