CN101546683A - No-sedimentation coating process method for energy-saving lamp tube - Google Patents
No-sedimentation coating process method for energy-saving lamp tube Download PDFInfo
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- CN101546683A CN101546683A CN200910064547A CN200910064547A CN101546683A CN 101546683 A CN101546683 A CN 101546683A CN 200910064547 A CN200910064547 A CN 200910064547A CN 200910064547 A CN200910064547 A CN 200910064547A CN 101546683 A CN101546683 A CN 101546683A
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Abstract
The invention discloses a no-sedimentation coating process method for an energy-saving lamp tube, and relates to the no-sedimentation coating process method for the energy-saving lamp tube. When powder slurry (2) in a lamp tube (1) is baked and dried, the lamp tube (1) is horizontally placed; and the lamp tube (1) autorotates and revolutes around an axis of revolution. The no-sedimentation coating process method for the energy-saving lamp tube provides blowing modes of air in different temperatures in an energy-saving lamp coating process by changing the placement mode of a helical lamp in the energy-saving lamp coating process, changes the mode for switching different autorotation rates in the energy-saving lamp coating process, and realizes the no-sedimentation coating truly by adjusting the transverse rotation and finely tuning the inclination mode simultaneously in the energy-saving lamp coating process.
Description
Technical field
The invention belongs to the no-sedimentation coating process method of energy-saving lamp tube, relate in particular to automatic control no-sedimentation coating technology, by implementing this continuous dusting production equipment of a kind of energy-saving lamp tube of control no-sedimentation coating technology automatically.
Background technology
At present in the electricity-saving lamp production process, the processing of electricity-saving lamp helical lampl part will be passed through: blank exposed conduit-bend pipe-shaping-dusting-roasted tube-seal-connect bridge-exhaust-seasoned-processing steps such as finished product.In many operations, traditional semi-automatic coating process is: the nature of glass fluorescent tube of moulding injects a certain amount of batter powder slurry by " simple-pouring equipment ".Make the helical lampl inwall apply last layer coating comparatively uniformly, then heat, the solvent evaporates in the bisque is burnt, thereby form comparatively firm bisque by " roasted tube equipment " blowing.Produce the hollow billet of helical lampl by said method.This is the production method that present electricity-saving lamp industry generally adopts.
In the existing this electricity-saving lamp spiral lamp processing method,, become pendulum the biggest problem in face of each electricity-saving lamp manufacturer at improving the dusting uniformity to improve the electricity-saving lamp inherent quality.Electricity-saving lamp dusting process all adopts method as shown in Figure 1 both at home and abroad: fluorescent tube (1) is erected to drench on the board rotation station to drip removes unnecessary powder slurry (2), and allow fluorescent tube (1) pass through different warm areas successively by rotating, be blown into the heated air of a certain amount of different temperatures.By the gravity of powder slurry (2) and the power of necessarily blowing of wind, make powder slurry (2) from top to bottom flow.But because fluorescent tube (1) is in erectility, relation as described in Figure 2, so fluorescent tube length and helix tube lead angle a, the powder slurry condenses easily in the lumen wall bottom.And since powder slurry (2) flow slowly, thereby cause bottom to gather in various degree slime spots.
As shown in Figure 3, when fluorescent tube (1) helix tube was placed vertically on equipment chain or transmission work station disk, the powder slurry (2) that is coated with relied on the action of gravity of himself, slowly flowed along tube inner wall.
Because it is little that the helix tube electricity-saving lamp, has determined that the lead angle of fluorescent tube (1) will be done very to the brightness requirement of lamp body, so that fluorescent tube (1) has more intensive helix tube number on unit length, thus the brightness that improves whole lamp.Because lead angle only can be as much as possible little, component the G '=G sin α of gravity on liquid flow direction, frictional force F '=(G cos α) Q increases when frictional force diminishes in less than the miter angle scope with α.To making liquid be difficult in pipe, flowing on the direction shown in Figure 3, unnecessary powder slurry (2) is discharged swimmingly.Technical barrier in traditional dusting process that Here it is.Brought up the primary quality defects of electricity-saving lamp product as described in Figure 4---fluorescent tube (1) dusting is inhomogeneous, the dusting on tube chamber top thin; The situation that the bottom is thicker than top.After such helical lampl baking setting, will produce the production disadvantage of " the fluorescent tube intracavity bottom forms accumulated powder, and whole dusting is inhomogeneous ".When lighting it, will see the shadow band of powder slime spots as shown in Figure 5 on the tube wall and fluorescent tube bottom and tube chamber bottom.
The fluorescent tube (1) of said method institute dusting has greatly influenced the luminous flux of lamp body and the aesthetic measure of outward appearance.Also to user's a kind of impure, impermeable bad impression of taking.Make that the rate of finished products of manufacturer is low, and then cost rises.This problem has seriously restricted the fast development of electricity-saving lamp industry and quick the popularizing that electricity-saving lamp is used.
Annotate; All there is described flaw in various electricity-saving lamps in the market (comprising the product that world-famous producer produces), so application finds that through nearly 2 years exploration, research back this flaw is not unsurmountable.
Summary of the invention
In order to overcome the deficiency in the background technology, the objective of the invention is to propose a kind of no-sedimentation coating process method for energy-saving lamp tube, no-sedimentation coating process method for energy-saving lamp tube of the present invention, by the modes of emplacement of the change helical lampl in the electricity-saving lamp coating process, the blowing mode of different temperatures gas in the electricity-saving lamp coating process is proposed; Change the different rotation rotating speed switching modes in the electricity-saving lamp coating process; Regulate finely tuning simultaneously in the electricity-saving lamp coating process and become the no-sedimentation coating that the inclination angle mode realizes real meaning in horizontal rotation.
The concrete processing step of realizing no-sedimentation coating process method of the present invention is:
A kind of no-sedimentation coating process method for energy-saving lamp tube, the powder slurry in the described fluorescent tube is placed for the traverse mode when the baking mummification, and the fluorescent tube rotation is also revolved round the sun around hollow shaft.
Described no-sedimentation coating process method for energy-saving lamp tube, the component of gravity on unnecessary powder slurry flow direction is: G '=G cos α can be drawn by the cosine function curve: when lead angle α more hour, G ' value approaches G more.Be that the power that flows of unnecessary powder slurry in fluorescent tube approaches self gravitation.Frictional force F '=(G sin α) Q can be drawn by the SIN function curve: α in less than 45 degree excursions is more little when lead angle, then malleation G "=G sin α value is just more little.
Described no-sedimentation coating process method for energy-saving lamp tube, the baking mummification is divided into:
A, baking pipe initial stage: send low temperature wind and low speed rotation.This moment, slurry fluidity was strong, favourable smooth and easy plasma discharge.
Mid-term is managed in B, baking: temperature is blown in the employing, and rotates for a long time with high rotational speed.This moment, the flowability of slurries began variation, and the powder slurry on the tube wall is not flowed or few flowing, and applied evenly.Avoid static and solidify, cause inhomogeneous.
C, baking pipe later stage: adopt the high temperature air-supply, solidify at the interior powder slurry that makes in the short period.Be fixed up, be coated in the inwall of helix tube firmly, equably.For it is heated evenly, still adopt high speed rotating, described fine setting inclination angle is decided to be the β angle;
Described no-sedimentation coating process method for energy-saving lamp tube, helical lampl is with the realization of horizontal rotational shaft mode dusting; Helical lampl after the grouting adopts fixedly five degrees of freedom of fluorescent tube mouth of helical lampl of helical lampl fluorescent tube mouth clamping apparatus, only stays the axial rotary freedom of fluorescent tube; Finish with axial rotary displacement, location.
Described no-sedimentation coating process method for energy-saving lamp tube, utilize fluorescent tube mouth clamping apparatus to fix helical lampl, then blowing device is cooperated over against fluorescent tube mouth position gap and be installed in the fluorescent tube mouth clamping apparatus outside, simultaneously helical lampl is done rotation around the axis of rotation that is the β angle with level, when fluorescent tube mouth clamping apparatus drove the helical lampl rotation, helical lampl revolved round the sun around hollow shaft; Fluorescent tube mouth clamping apparatus, fluorescent tube mouth are also rotating around hollow shaft; The wind-force distributor gear by airduct respectively with the wind of the end, middle and high three kinds of different temperatures by the blowing mouth of blowing device will hang down warm air periodically, in reciprocating type two fluorescent tube mouths sending into helical lampl.
Described no-sedimentation coating process method for energy-saving lamp tube is provided with the recovery of powder slurry and connects the powder groove below the fluorescent tube mouth.
Described no-sedimentation coating process method for energy-saving lamp tube, blowing mouth at blowing device is set to a plurality of, but being set in 170 ° of 360 ° of circumference of blowing mouth, that is to say when fluorescent tube mouth A connects blowing mouth, fluorescent tube mouth B is necessary for non-on-state, so that the effluxing of one of them fluorescent tube implication stream.
Described no-sedimentation coating process method for energy-saving lamp tube is put into the fluorescent tube mouth clamping apparatus that slowly runs when the helical lampl of first-class powder slurry, and fluorescent tube is just with axis of rotation slow rotation.Unnecessary powder slurry flows out to the connecing in the powder groove, in order to recycling of below along helical pipe is smooth and easy under the effect of gravity and turning moment.The low warm air that is blown out by blower and blowing mouth is taken away the gas that volatilizes simultaneously.
Described no-sedimentation coating process method for energy-saving lamp tube changes the major parameter in " dusting plasma discharge ": improve the air themperature that is blown into to high temperature, accelerate the rotary speed of helical lampl around self axle.It is dry to reach curing with suitable period of revolution running, finally obtains the uniform fluorescent tube of dusting.
Owing to adopt technique scheme, the invention has the beneficial effects as follows:
Described no-sedimentation coating process method for energy-saving lamp tube, the roasted tube technology that breaks traditions has courageously adopted the horizontal type scheme.Thereby improved the product processing environment, made the product dusting even, improved the product quality grade.Can realize that by no-sedimentation coating process method for energy-saving lamp tube of the present invention not having shadow is coated with pipe, its bisque is more even, has overcome the drawback that dusting has shadow.Process of the present invention has characteristics such as reliable operation, production efficiency height, with high content of technology, the exquisite fashion of external form, be widely used in domestic and international electricity-saving lamp manufacturing enterprise, no-sedimentation coating process method for energy-saving lamp tube of the present invention can be described as the revolution innovation of electricity-saving lamp industry.
Description of drawings
Fig. 1 is that the existing fluorescent tube pouring method of dripping is removed unnecessary powder slurry operation principles schematic diagram.
Fig. 2 is the schematic diagram that concerns of existing fluorescent tube length and helix tube lead angle.
Fig. 3 is that existing tube helix tube pipe places that powder slurry on equipment chain or transmission work station disk relies on the action of gravity of himself vertically and along the slow flow regime schematic diagram of tube inner wall.
Fig. 4 is that the dusting slurry back tangent plane bisque of existing tube helix tube pipe is kept somewhere view.
Fig. 5 is the powder slime spots behind the dusting slurry of existing tube helix tube pipe and the shadow band schematic diagram of fluorescent tube bottom and tube chamber bottom.
Fig. 6 is that tube helix tube pipe powder slurry of the present invention evenly applies the operation principles schematic diagram.
Fig. 7 is the dusting slurry back wind-force access lane schematic diagram of tube helix tube pipe of the present invention.
Fig. 8 is the horizontal rotation alternating temperature blowing schematic diagram of tube helix tube pipe of the present invention.
Fig. 9 is that tube helix tube pipe of the present invention laterally rotates alternating temperature blowing angle schematic diagram for adapting to the adjustment of different powder slurry proportioning.
Figure 10 is that the blowing device blowing mouth of tube helix tube pipe of the present invention is arranged schematic diagram.
Figure 11 is that the present invention realizes the powder slurry distribution schematic diagram after the dusting of tube helix tube pipe is starched.
In the drawings: 1, fluorescent tube; 2, powder slurry; 3, fluorescent tube mouth (a, b); 4, fluorescent tube mouth clamping apparatus; 5, airduct; 6, blowing device; 7, blowing mouth; 8, wind; 9, wind-force distributor gear.
Embodiment
With reference to the following examples, can explain the present invention in more detail;
A kind of no-sedimentation coating process method for energy-saving lamp tube;
The change of the modes of emplacement of helical lampl 1 in the present invention is a technological core core of the present invention.The present invention has changed original state of art fluorescent tube 1 horizontal situation at one stroke and has evenly applied the operation principles schematic diagram at the 1 helix tube powder of the fluorescent tube of the present invention shown in Fig. 6,7,8,9 slurry 2.The component that gravity is starched on 2 flow directions at unnecessary powder is: G '=G cos α can be drawn by the cosine function curve: when lead angle α more hour, G ' value approaches G more.Be that the power that flows of unnecessary powder slurry 2 in fluorescent tube 1 approaches self gravitation.Frictional force F '=(G sin α) Q can be drawn by the SIN function curve: α in less than 45 degree excursions is more little when lead angle, then malleation G "=G sin α value is just more little.Under the constant situation of coefficient of friction Q, then frictional force F ' is just more little.Powder drips just easier to be mobile along direction as shown in pipe.
The data analysis of vertical tube and transverse tube:
Vertical tube: the partical gravity G ' on flow direction=G sin α
Frictional force F ' on flow direction (G cos α) Q
Transverse tube: the partical gravity G ' on flow direction=G cos α
Frictional force F ' on flow direction=(G sin α) Q
Conclusion: under the situation of lead angle less than 45 degree, horizontal G ' is much larger than the perpendicular G ' that puts; And it is horizontal
F ' is much smaller than the perpendicular F ' that puts.
The flowability of the powder slurry 2 under the traverse mode is far superior to the flowability of the mode of placing vertically." horizontal commentaries on classics mode can be improved the discharge environment of unnecessary powder slurry 2, is easy to flow out "
The change that divides the blowing mode of temperature in energy-saving lamp tube 1 coating process.
Take into full account powder slurry 2 is subjected to wind-warm syndrome and blowing mode in the oven dry process of setting influence among the present invention.Along with the prolongation of drying time, the flowability of colloid descends, and the heat of required absorption also quickens to increase.
So the present invention takes the different temperatures blowing, Hong Gan mode is come corresponding above-mentioned rule one by one.
A, baking pipe initial stage: send low temperature wind and low speed rotation.This moment, slurry fluidity was strong, favourable smooth and easy plasma discharge.
Mid-term is managed in B, baking: temperature blows 8 in the employing, and rotates for a long time with high rotational speed.This moment, the flowability of slurries began variation, and the powder slurry on the tube wall is not flowed or few flowing, and applied evenly.Avoid static and solidify, cause inhomogeneous.
C, baking pipe later stage: adopt the high temperature air-supply, solidify at the interior powder slurry that makes in the short period.Be fixed up, be coated in the inwall of helix tube firmly, equably.For it is heated evenly, still adopt high speed rotating, described fine setting inclination angle is decided to be the β angle;
When the β angle when 0 degree～α spends, powder slurry flow path direction changes between 0～α at the vertical direction angle.That is to say that the slurry drip in the helical lampl changes to being controlled between 0～α by the β angle, thereby change the G ' component size on the flow direction.The requirement of the different plasma discharge velocity variations that reached different proportioning powder slurry viscosityes differences and needed.
Sum up: the theoretical requirement:
1. helical lampl is with the dusting of horizontal rotational shaft mode;
2. helical lampl is finished three parts of technology around vertical axis revolution: respectively be the dusting plasma discharge, evenly apply and solidify drying;
3. helical lampl can be regulated the inclination angle, to be fit to the technology versatility requirement of different formulations starch.
The realization of process of the present invention;
At first at: helical lampl is with the realization of horizontal rotational shaft mode dusting;
Embodiment: the helical lampl 1 after the grouting adopts fixedly 3 five degrees of freedom of fluorescent tube mouth of helical lampl of helical lampl fluorescent tube mouth clamping apparatus 4, only stays the axial rotary freedom of fluorescent tube; Finish with axial rotary displacement, location.
Illustrate: two fluorescent tube mouths 3 of helical lampl 1, insert along the rotating shaft direction in the position, two clamping holes of fluorescent tube mouth clamping apparatus 4.Utilize the motor shaft transmission, thereby drive helical lampl 1 is finished the rotation around rotating shaft.
T＝0.4min/0.05min
Finish the realization of dusting plasma discharge in three parts of technology at: helical lampl 1 around the vertical axis revolution then;
In Fig. 6, utilize fluorescent tube mouth clamping apparatus 4 fixing helical lampl 1, then blowing device 6 is cooperated over against fluorescent tube mouth 3 position gap and be installed in fluorescent tube mouth clamping apparatus 4 outsides, simultaneously helical lampl 1 is done rotation around the axis of rotation that is the β angle with level, when fluorescent tube mouth clamping apparatus 4 drove helical lampl 1 rotation, helical lampl 1 revolved round the sun around hollow shaft; Fluorescent tube mouth clamping apparatus 4, fluorescent tube mouth 3 are also rotating around hollow shaft; Wind-force distributor gear 9 by airduct 5 respectively with the wind 8 of the end, middle and high three kinds of different temperatures by the blowing mouth 7 of blowing device 6 will hang down warm air periodically, in reciprocating type two fluorescent tube mouths 3 sending into helical lampl 1; Certainly, 2 recovery of powder slurry can be set below fluorescent tube mouth 3 connect the powder groove in order to save cost.。
Illustrate: the blowing mouth 7 of blowing device 6 is set to a plurality of in Figure 10, but being set in 170 ° of 360 ° of circumference of blowing mouth 7, that is to say that fluorescent tube mouth B3 is necessary for non-on-state when fluorescent tube mouth A3 connects blowing mouth 7, so that the effluxing of one of them fluorescent tube mouth 3 air-flow.
Process prescription:
Put into the fluorescent tube mouth clamping apparatus that slowly runs when the helical lampl of first-class powder slurry, fluorescent tube is just with axis of rotation slow rotation.Unnecessary powder slurry flows out to the connecing in the powder groove, in order to recycling of below along helical pipe is smooth and easy under the effect of gravity and turning moment.The low warm air that is blown out by blower and blowing mouth is taken away the gas that volatilizes simultaneously.
Finish the realization that evenly applies in three parts of technology at: helical lampl around the vertical axis revolution;
Embodiment: change the major parameter in " dusting plasma discharge ": improve the air themperature that is blown into to middle temperature, accelerate the rotary speed of helical lampl around self axle.Prolong the service cycle of whole process, reach the purpose of " evenly applying ".
Finish three parts of technology at: helical lampl around the vertical axis revolution at last: solidify dry realization
Embodiment: change the major parameter in " dusting plasma discharge ": improve the air themperature that is blown into to high temperature, accelerate the rotary speed of helical lampl around self axle.Reach the purpose of " solidifying dry " with suitable period of revolution running.
| Title | Revolution | Rotation | Rotational velocity | The blowing temperature | Work period |
| The dusting plasma discharge | Be | Be | Low | Low | T |
| Evenly apply | Be | Be | High | In | 2T |
| Solidify dry | Be | Be | High | High | T |
T is the public time of circling
At: helical lampl can be regulated the inclination angle, with the realization of the technology versatility requirement that is fit to the different formulations starch;
Implementation method: described fluorescent tube angle can be finely tuned, and described fine setting can not be provided with regulating and controlling mechanism by fluorescent tube mouth clamping apparatus 4 or on fluorescent tube mouth clamping apparatus 4 or down, and the fluorescent tube 1 in the rotation is adjusted, and changes or adjust the realization at β angle.
β=0 when fluorescent tube mouth clamping apparatus=vertical
β=0 ~ β when fluorescent tube mouth clamping apparatus=non-perpendicular
Just β finely tunes in the scope of design
The realization of integrated artistic action;
The technological requirement of finishing;
After fluorescent tube has been irritated powder slurry, enter this process equipment, solidified after finishing and the powder slurry no longer mobile, in Figure 11, finally realize the uniform fluorescent tube of dusting.
The embodiment that selects for use in this article in order to disclose purpose of the present invention currently thinks to suit, but will be appreciated that, the present invention is intended to comprise that all belong to all changes and the improvement of the interior embodiment of this design and the scope of the invention.
Claims (9)
1, a kind of no-sedimentation coating process method for energy-saving lamp tube; It is characterized in that; Powder slurry (2) in the described fluorescent tube (1) is placed for the traverse mode when the baking mummification, and (1) rotation of described fluorescent tube is also revolved round the sun around hollow shaft.
2, no-sedimentation coating process method for energy-saving lamp tube according to claim 1 is characterized in that; The component that gravity is starched on (2) flow direction at unnecessary powder is: G '=G cosa can be drawn by the cosine function curve: when lead angle a more hour, G ' value approaches G more; Be that the power that flows of unnecessary powder slurry (2) in fluorescent tube (1) approaches self gravitation; Frictional force F '=G sina, Q can be drawn by the SIN function curve: a in less than 45 degree excursions is more little when lead angle, then malleation G "=G sina value is just more little.
3, no-sedimentation coating process method for energy-saving lamp tube according to claim 1 and 2 is characterized in that; Described baking mummification is divided into:
A, baking pipe initial stage: send low temperature wind and low speed rotation; This moment, slurry fluidity was strong, favourable smooth and easy plasma discharge;
Mid-term is managed in B, baking: temperature is blown in the employing, and rotates for a long time with high rotational speed; This moment, the flowability of slurries began variation, and the powder slurry (2) on the tube wall is not flowed or few flowing, and applied evenly; Avoid static and solidify, cause inhomogeneous;
C, baking pipe later stage: adopt the high temperature air-supply, solidify at the interior powder slurry that makes in the short period; Be fixed up, be coated in the inwall of helix tube firmly, equably; For it is heated evenly, still adopt high speed rotating, described fine setting inclination angle is decided to be the β angle.
4, no-sedimentation coating process method for energy-saving lamp tube according to claim 1 is characterized in that; Described helical lampl is with the realization of horizontal rotational shaft mode dusting; Helical lampl after the grouting (1) adopts fixedly (3) five degrees of freedom of fluorescent tube mouth of helical lampl of helical lampl fluorescent tube mouth clamping apparatus (4), only stays the axial rotary freedom of fluorescent tube; Finish with axial rotary displacement, location.
5, no-sedimentation coating process method for energy-saving lamp tube according to claim 1 is characterized in that; Utilize fluorescent tube mouth clamping apparatus (4) fixing helical lampl (1), then blowing device (6) is cooperated over against fluorescent tube mouth (3) position gap and be installed in fluorescent tube mouth clamping apparatus (4) outside, simultaneously helical lampl (1) is done rotation around the axis of rotation that is the β angle with level, when fluorescent tube mouth clamping apparatus (4) drove helical lampl (1) rotation, helical lampl (1) revolved round the sun around hollow shaft; Fluorescent tube mouth clamping apparatus (4), fluorescent tube mouth (3) are also rotating around hollow shaft; Wind-force distributor gear (9) by airduct (5) respectively with the wind (8) of the end, middle and high three kinds of different temperatures by the blowing mouth (7) of blowing device (6) will hang down warm air periodically, in reciprocating type two fluorescent tube mouths (3) of sending into helical lampl (1).
6, according to claim 1,4 or 5 described no-sedimentation coating process method for energy-saving lamp tube, it is characterized in that; In fluorescent tube mouth (3) below powder slurry (2) recovery is set and connects the powder groove.
7, according to claim 1,4 or 5 described no-sedimentation coating process method for energy-saving lamp tube, it is characterized in that; Blowing mouth (7) in blowing device (6) is set to a plurality of, but being set in 170 ° of 360 ° of circumference of blowing mouth (7), so that the effluxing of one of them fluorescent tube mouth (3) air-flow.
8, no-sedimentation coating process method for energy-saving lamp tube according to claim 1 is characterized in that; Put into the fluorescent tube mouth clamping apparatus that slowly runs when the helical lampl of first-class powder slurry, fluorescent tube is just with axis of rotation slow rotation; Unnecessary powder slurry (2) flows out to the connecing in the powder groove, in order to recycling of below along helical pipe is smooth and easy under the effect of gravity and turning moment; The low warm air that is blown out by blower and blowing mouth (7) is taken away the gas that volatilizes simultaneously.
9, no-sedimentation coating process method for energy-saving lamp tube according to claim 1 is characterized in that; Change the major parameter in the dusting plasma discharge: improve the air themperature that is blown into to high temperature, accelerate the rotary speed of helical lampl around self axle; It is dry to reach curing with suitable period of revolution running, finally obtains the uniform fluorescent tube of dusting (1).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101996830A (en) * | 2009-08-10 | 2011-03-30 | 盐城豪迈照明科技有限公司 | Screw-type hot cathode fluorescent tube and manufacturing method thereof |
| CN101667514B (en) * | 2009-09-24 | 2011-09-14 | 临安钱氏照明电器有限公司 | Evenly bepowdering method of helical tube |
-
2009
- 2009-03-23 CN CN200910064547A patent/CN101546683A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101996830A (en) * | 2009-08-10 | 2011-03-30 | 盐城豪迈照明科技有限公司 | Screw-type hot cathode fluorescent tube and manufacturing method thereof |
| CN101667514B (en) * | 2009-09-24 | 2011-09-14 | 临安钱氏照明电器有限公司 | Evenly bepowdering method of helical tube |
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Open date: 20090930 |