CN101064414B - Compound center electrode of vehicle plug and its preparing method - Google Patents
Compound center electrode of vehicle plug and its preparing method Download PDFInfo
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- CN101064414B CN101064414B CN2006100505656A CN200610050565A CN101064414B CN 101064414 B CN101064414 B CN 101064414B CN 2006100505656 A CN2006100505656 A CN 2006100505656A CN 200610050565 A CN200610050565 A CN 200610050565A CN 101064414 B CN101064414 B CN 101064414B
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Abstract
The invention relates to compound central electrode and preparing craftworks of automobile spark plug, a compound central electrode of the automobile spark plug, the end of which is made of solid nickel alloy material, one end surface of the end is seal with end of the compound material bar which is packaged by stainless steel. The end is column, and the bar is column with upsetting shoulder, end surfaces of the two columns are extruded and welded. It is produced by definite preparing craftworks. The adaptation of the invention makes structure of end produced by nickel alloy material simple, and without working procedure of squeezing cup, the machining craftworks is simplified. And contact between copper core and end surface of the nickel alloy is flat contact instead of pyramidal face, the outer material of copper core is stainless steel instead of nickel alloy, volume ratio of copper core is increased, so integral conductive capability and radiating capability is increased, and cost is decreased, preparing craftwork is simple relatively.
Description
Technical field
The present invention relates to a kind of complex centre electrode and preparation technology thereof of automobile spark plug.
Background technology
The central electrode of existing automobile spark plug for guaranteeing excellent conducting performance, adopts copper material usually, but has adopted nickel alloy and copper core structure combining because the performance of the high temperature resistant and anti-galvanic corrosion of copper material, therefore has electrode now far away from nickel alloy material.As shown in Figure 1: the cup-shaped 1 of sky in the nickel alloy material is squeezed into, owing to squeeze the technological requirement of cup, the cup end, be taper shape.Copper core 2 is cylindrical shape, and it is conical that its end is, and the cylinder that nickel alloy material is made closely is wrapped in copper core outside, is provided with the shoulder 3 of upsetting at the afterbody of central electrode, and promptly the discharge end parts of electrode is made by nickel alloy material, is commonly referred to nickel one bronze medal combination electrode.
Because nickel alloy adopts nickel manganese silicochromium usually, its hardness is higher, be processed into technology relative complex cup-shaped and parcel copper core, its manufacturing process flow is as shown in Figure 2: be illustrated as the technological process table, the requirement of the manufacturing procedure of nickel material is complicated, because of squeezing the cup requirement, needs twice annealing to handle, and, also to adopt the mode of ultrasonic waves for cleaning owing to cup-shaped structure.The copper material that processes carries out modularity combination, pressure encapsulation, several undergauge and subsequent treatment with a crowded glass of nickel material that is shaped to be finished.Because the nickel material need squeeze cup, nickel material diameter dimension can not be too little, but so will be bigger than electrode required size, therefore needs undergauge processing for several times.
In addition, tapered at the bottom of the electrode tip cup, the shared volume of copper core reduces relatively, and electric conductivity and heat dispersion are also had certain influence.
In addition, the price of nickel alloy almost is the twice of stainless steel material price on the market, and the thermal diffusivity of nickel alloy neither be very good, therefore adopts under the situation of nickel alloy at electrode tip, and can find the alternative of the material of parcel copper core also be a new problem.
Summary of the invention
The object of the present invention is to provide the complex centre electrode of the automobile spark plug that a kind of technology is simple relatively, cost is low relatively.The electric conductivity and the heat dispersion of this combination electrode improve.
The present invention also aims to provide a kind of preparation technology of complex centre electrode of automobile spark plug, this technology is simple, and the technology cost is low.
For achieving the above object, the present invention has adopted following technical scheme:
A kind of complex centre electrode of automobile spark plug, its end is made by the solid nickel alloy material, and an end face of this end welds mutually with an end face that is closely wrapped up the composite material body of rod of copper core by stainless steel.
The described electrode tip of being made by the solid nickel alloy material is cylinder, and the composite material body of rod that is closely wrapped up the copper core by stainless steel is the cylinder that is provided with the shoulder of upsetting, and the end face extruding butt welding of two cylinders butt joint connects.
The preparation technology of the complex centre electrode of described automobile spark plug, its technological process is as follows:
(1) stainless steel closely wraps up the body of rod that the copper core is made copper core one stainless steel sleeve composite material, and the copper core one stainless steel sleeve composite material body of rod is carried out blank and cleaning-drying;
(2) blank of the body of rod made of the nickel alloy material gentle cleaning-drying of upsetting;
(3) end face of the individuality of the material that above-mentioned (1) (2) two steps are processed separately connects and pushes butt welding and connects;
(4) technology that cooperates high temperature with vacuum diffusion is handled the contact-making surface that the end face and the stainless steel of pressure welding closely wraps up the copper core;
(5) the whole shaping of electrode;
(6) the electrode afterbody is upset and is takeed on and moulding;
(7) surface light decorations cleaning-drying.
The employing of technique scheme, make the simple in structure of end that nickel alloy material is made to need not to squeeze a cup operation, therefore omitted technologies such as the necessary annealing of crowded cup technology, only needing will shaft-like nickel alloy material blank, it is flat to upset, cleaning gets final product, and makes its processing technology greatly simplify.The copper core one stainless steel sleeve composite material body of rod also can be realized by common drawing process.Also be owing to need not to squeeze the cup operation in addition, make the size of the nickel alloy material and the copper core one stainless steel sleeve composite material body of rod settle at one go, omitted old technology because of squeezing the several diameter reducing process that the cup operation takes place.
Simultaneously owing to there has not been structure at the bottom of the beaker flask, the copper core becomes plane contact with contacting by conical surface contact of nickel alloy end, makes the copper core account for the volume ratio increase of electrode, thereby has improved the electric conductivity and the heat dispersion of electrode integral body.
In addition, the copper core is wrapped up in material outward change to stainless steel by nickel alloy, reduced cost, simultaneously because the copper core is relative simple with the preparation technology of stainless steel sleeve composite material, the thickness of therefore relative nickel alloy cover, the thickness of stainless steel sleeve reduces, and the volume ratio that the copper core accounts for electrode further increases, and then has improved the electric conductivity and the heat dispersion of electrode again.
Description of drawings
The structural representation of nickel one bronze medal combination electrode in Fig. 1 prior art
Preparation technology's flow chart of nickel one bronze medal combination electrode in Fig. 2 prior art
The structural representation of nickel one bronze medal one stainless steel double composite electrode embodiment among Fig. 3 the present invention
Preparation technology's flow chart of nickel one bronze medal one stainless steel double composite electrode among Fig. 4 the present invention
Embodiment
Embodiment 1: a kind of complex centre electrode of automobile spark plug, and as shown in Figure 3, its end 11 is made by the solid nickel alloy material, and an end face 12 of this end welds mutually with an end face 16 that is closely wrapped up the composite material body of rod 15 of copper core 14 by stainless steel 13.The described electrode tip of being made by the solid nickel alloy material is cylinder, and the composite material body of rod 15 that is closely wrapped up copper core 14 by stainless steel 13 also is the cylinder that being provided with the shoulder 17 of upsetting, the end face extruding butt welding connection of two cylinders butt joint.
Embodiment 2: the preparation technology of the complex centre electrode of automobile spark plug, as shown in Figure 4, its technological process is as follows: (1) stainless steel closely wraps up the body of rod that the copper core is made copper core one stainless steel sleeve composite material, and the copper core one stainless steel sleeve composite material body of rod is carried out blank and cleaning-drying; (2) blank of the body of rod made of the nickel alloy material gentle cleaning-drying of upsetting; (3) end face of the individuality of the material that above-mentioned (1) (2) two steps are processed separately connects and pushes butt welding and connects; (4) technology that cooperates high temperature with vacuum diffusion is handled the contact-making surface that the end face and the stainless steel of pressure welding closely wraps up the copper core; (5) the whole shaping of electrode; (6) the electrode afterbody is upset and is takeed on and moulding; (7) surface light decorations cleaning-drying.
Claims (1)
1. the preparation technology of the complex centre electrode of an automobile spark plug, the end of this complex centre electrode is made by the solid nickel alloy material, one end face of this end welds mutually with an end face that is closely wrapped up the composite material body of rod of copper core by stainless steel, the electrode tip that described solid nickel alloy material is made is cylinder, the described composite material body of rod is the cylinder that is provided with the shoulder of upsetting, the end face extruding butt welding of two cylinders butt joint connects, and it is characterized in that the manufacturing process flow of this complex centre electrode is as follows:
(1) stainless steel closely wraps up the body of rod that the copper core is made copper core-stainless steel sleeve composite material, and copper core-stainless steel sleeve composite material body of rod is carried out blank and cleaning-drying;
(2) blank of the body of rod made of the nickel alloy material gentle cleaning-drying of upsetting;
(3) end face of the individuality of the material that above-mentioned (1) (2) two steps are processed separately connects and pushes butt welding and connects;
(4) technology that cooperates high temperature with vacuum diffusion is handled the contact-making surface that the end face and the stainless steel of pressure welding closely wraps up the copper core;
(5) the whole shaping of electrode;
(6) the electrode afterbody is upset and is takeed on and moulding;
(7) surface light decorations cleaning-drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100505656A CN101064414B (en) | 2006-04-28 | 2006-04-28 | Compound center electrode of vehicle plug and its preparing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100505656A CN101064414B (en) | 2006-04-28 | 2006-04-28 | Compound center electrode of vehicle plug and its preparing method |
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| Publication Number | Publication Date |
|---|---|
| CN101064414A CN101064414A (en) | 2007-10-31 |
| CN101064414B true CN101064414B (en) | 2010-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2006100505656A Active CN101064414B (en) | 2006-04-28 | 2006-04-28 | Compound center electrode of vehicle plug and its preparing method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6768743B2 (en) * | 2018-06-06 | 2020-10-14 | 日本特殊陶業株式会社 | A method for manufacturing a composite for forming an electrode of a spark plug, and a method for manufacturing a spark plug. |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2296033A (en) * | 1941-01-18 | 1942-09-15 | Gen Motors Corp | Spark plug |
| CN2073177U (en) * | 1990-06-13 | 1991-03-13 | 蔡汉平 | Double-metal central electrode |
| CN1054508A (en) * | 1990-04-24 | 1991-09-11 | 南京火花塞研究所 | Ni-Cu electrode for spark plug is made |
| CN1024876C (en) * | 1989-12-16 | 1994-06-01 | 罗伯特-博希股份公司 | Spark plug electrodes and process for making thereof |
| CN1198848A (en) * | 1996-08-08 | 1998-11-11 | 罗伯特·博施有限公司 | Electrode for spark plugs of internal combustion engines and process for manufacturing the same |
-
2006
- 2006-04-28 CN CN2006100505656A patent/CN101064414B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2296033A (en) * | 1941-01-18 | 1942-09-15 | Gen Motors Corp | Spark plug |
| CN1024876C (en) * | 1989-12-16 | 1994-06-01 | 罗伯特-博希股份公司 | Spark plug electrodes and process for making thereof |
| CN1054508A (en) * | 1990-04-24 | 1991-09-11 | 南京火花塞研究所 | Ni-Cu electrode for spark plug is made |
| CN2073177U (en) * | 1990-06-13 | 1991-03-13 | 蔡汉平 | Double-metal central electrode |
| CN1198848A (en) * | 1996-08-08 | 1998-11-11 | 罗伯特·博施有限公司 | Electrode for spark plugs of internal combustion engines and process for manufacturing the same |
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| Publication number | Publication date |
|---|---|
| CN101064414A (en) | 2007-10-31 |
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