CN103934181A - Manufacturing method of composite screw and product thereof - Google Patents
Manufacturing method of composite screw and product thereof Download PDFInfo
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- CN103934181A CN103934181A CN201310024323.XA CN201310024323A CN103934181A CN 103934181 A CN103934181 A CN 103934181A CN 201310024323 A CN201310024323 A CN 201310024323A CN 103934181 A CN103934181 A CN 103934181A
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Abstract
A manufacturing method of a composite screw comprises the following steps that (a) primary blank is prepared, the primary blank comprises a rod head and a screw rod which extends downwards from the rod head, the rod head and a first rod body of the screw rod are made of Austenitic series stainless steel, and a second rod body of the screw rod is made of chrome-molybdenum alloy steel; (b) the primary blank is soaked in a transparent processing film solution; (c) a first transparent processing film is formed on the surface of the primary blank; (d) the primary blank is soaked into the transparent processing film solution again; (e) a second transparent processing film is formed on the surface of a first transparent processing film. The first transparent processing film and the second transparent processing film improve the recognizable degree of a product, and further can improve the anti-rust property and the drilling property of the screw. The invention further provides the composite screw manufactured through the manufacturing method of the composite screw.
Description
Technical field
The present invention relates to a kind of manufacture method and goods thereof of screw, particularly relate to a kind of manufacture method and goods thereof of composite screws.
Background technology
Consult Fig. 1, for existing a kind of combined type screw, comprise a body 11, and the protective layer 21 being overlayed on this body 11, this body 11 comprises a bar head 12, and one by this bar head 12 screw rod 13 to downward-extension, this screw rod 13 has first shaft 131 being connected with this bar head 12, and second shaft 132 being connected with this first shaft 131, this bar head 12 is to be made up of austenite stainless steel with the first shaft 131 of screw rod 13, and the second shaft 132 of this screw rod 13 is to be made up of mild steel, due to material qualitative factor, the color of this second shaft 132 can be different from the color of the first shaft 131.This protective layer 21 is to utilize the mode of plating or application to be formed on this body 11, increases the corrosion resistance of this combined type screw, also can increase aesthetic property simultaneously.
This that make with mild steel the second shaft 132 is better in hardness, contribute to bore the smoothness of attacking, cutting, and this bar head 12 made from austenite, and anti-corrosion, the antirust ability of the first shaft 131 is better, so the body 11 of combined type screw is to make by two kinds of materials, the advantage of bond material makes entirety on drilling ability, antirust ability, have good performance.
But generally this combined type screw still has following shortcoming in actual use:
1. rust-proof effect is not good
In the time making this combined type screw, the first shaft 131 of the screw rod 13 of this body 11, the second shaft 132 can carry out Carburization Treatment, to increase the hardness on these the second shaft 132 surfaces, make the easy carbon distribution of superficial layer of the first shaft 131 and the second shaft 132, cause the antirust power deficiency of this first shaft 131.
2. drill thrust deficiency
In the time of plating or this protective layer 21 of application; need at the temperature of approximately 200 DEG C ~ 220 DEG C, toast; and high temperature makes steel cause tissue rotten, softening because being forced to tempering again; finally be cooled to after normal temperature (approximately 20 DEG C ~ 30 DEG C); the most advanced and sophisticated hardness of this second shaft 132 can decline, and while making drilling, can be worn away rapidly, tests through reality; general combined type screw can only be applicable to the iron plate below thickness 5mm, and cannot attack brill corrosion resistant plate.
3. contaminative is high, cost is high
Electroplate or application all can produce a large amount of metal waste liquids, have serious industrial pollution, and the processing of waste liquid, recovery, with the consumption of electric energy, water resource, also make the cost on manufacturing can not be in any more.
4. identification is not high
Be subject to the impact of this protective layer 21; this combined type screw is not easily distinguishable in appearance with the general screw of making by single material; cannot find out that the color of the second shaft 132 of combined type screw can be different from the color of the first shaft 131, for the marketing of product, the characteristic that expansion is difficult for showing composite.
Summary of the invention
The object of the present invention is to provide a kind of contaminative low, increase identification, and high manufacture method of attacking the composite screws of brill ability.
The manufacture method of composite screws of the present invention, comprises following steps:
(a) prepare base at the beginning of, this first base comprises a bar head, and one by this bar head the screw rod to downward-extension, this screw rod has first shaft being connected with this bar head, and second shaft being connected with this first shaft, the first shaft of this bar head and screw rod is to be made up of austenite stainless steel, and the second shaft of this screw rod is to be made up of chrome-moly steel.
(b) this first base is soaked in to a transparent processing coating solution, wherein the composition of this transparent processing coating solution has diethyl ethylene glycol butyl ether acetate, organic and inorganic composite crosslinking water machine resin, and water.
(c) this first base is taken out from this transparent processing coating solution, and dehydration, baking, make the surface of this first base be formed with the first transparent processing film of layer of transparent after cooling.
(d) the first base that is formed with the first transparent processing film is soaked in a transparent processing coating solution.
(e) the first base that is formed with the first transparent processing film is taken out from this transparent processing coating solution, and dehydration, baking, make the surface of this first transparent processing film be formed with the second transparent processing film of layer of transparent after cooling.
The object of the invention to solve the technical problems also can be used in lower technical measures and further realize.
Preferably, the manufacture method of aforesaid composite screws, wherein the transparent processing coating solution in step (b) is in gross weight percentage 100, described diethyl ethylene glycol butyl ether acetate accounts for 10 to 20 weight percents, organic and inorganic composite crosslinking water machine resin accounts for 15 to 30 weight percents, and water accounts for 50 to 75 weight percents.
Preferably, the manufacture method of aforesaid composite screws, wherein the transparent processing coating solution in step (b) is in gross weight percentage 100, described diethyl ethylene glycol butyl ether acetate accounts for 15 weight percents, organic and inorganic composite crosslinking water machine resin accounts for 22 weight percents, and water accounts for 63 weight percents.
Preferably, the manufacture method of aforesaid composite screws, wherein in step (b), (d), the temperature of this transparent processing coating solution is 20 to 30 DEG C, and the time that this first base soaks is 10 to 20 seconds.
Preferably, the manufacture method of aforesaid composite screws, wherein in step (c), (e), this first base, from this transparent processing coating solution takes out and dewaters, is at the temperature of 80 DEG C to 110 DEG C, to toast 20 minutes.
Preferably, the manufacture method of aforesaid composite screws, wherein this manufacture method is also included in step (a) inferior step (a-1) afterwards, and inferior step (a-1) is, with high frequency mode of heating, the second shaft of this screw rod is carried out to surface sclerosis.
Preferably, the manufacture method of aforesaid composite screws, wherein this manufacture method is also included in time step (a-1) inferior step (a-2) afterwards, and inferior step (a-2) is that this first base is carried out to pickling processes, removes the just impurity on base surface.
Preferably, the manufacture method of aforesaid composite screws, wherein in step (a), the first shaft of this bar head and screw rod is that to be selected from SUS304 be that stainless steel or SUS316 are that stainless steel is made, and the second shaft of this screw rod is that to be selected from SCM435 be that chrome-moly steel or SCM440 are that chrome-moly steel is made.
Moreover another object of the present invention, is to provide the composite screws that a kind of drilling ability is good, increase identification.
Composite screws of the present invention, comprises the first transparent processing film that base, one deck at the beginning of are transparent and are formed on this first base surface, and one deck is transparent and is formed on the second transparent processing film on this first transparent processing film surface.
This first base comprises a bar head, and one by this bar head the screw rod to downward-extension, this screw rod has first shaft being connected with this bar head, and second shaft being connected with this first shaft, the first shaft of this bar head and screw rod is to be made up of austenite stainless steel, and the second shaft of this screw rod is to be made up of chrome-moly steel.
The composition of this first transparent processing film, the second transparent processing film has diethyl ethylene glycol butyl ether acetate, and organic and inorganic composite crosslinking water machine resin.
Preferably, aforesaid composite screws, wherein the first shaft of this bar head and screw rod is that to be selected from SUS304 be that stainless steel or SUS316 are that stainless steel is made, the second shaft of this screw rod is that to be selected from SCM435 be that chrome-moly steel or SCM440 are that chrome-moly steel is made.
Beneficial effect of the present invention is: by this first base is immersed in after this transparent processing coating solution, form transparent, colourless this first transparent processing film, the second transparent processing film, reduce the pollution on manufacturing, improve product identification, more can promote rust-preventing characteristic, the drilling of screw.
Brief description of the drawings
Fig. 1 is a schematic diagram, and existing a kind of combined type screw is described;
Fig. 2 is a flow chart, and a preferred embodiment of the manufacture method of composite screws of the present invention is described;
Fig. 3 is a schematic diagram, and the composite screws that above-mentioned manufacture method is made is described.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in detail.
Before the present invention is described in detail, be noted that in the following description content, similarly element is to represent with identical numbering.
Consult Fig. 2 and Fig. 3, for a preferred embodiment of the manufacture method of composite screws of the present invention, comprise following steps.
Step 51, prepares a first base 3, and this first base 3 comprises a bar head 31, and one by this bar head 31 screw rod 32 to downward-extension.This screw rod 32 has first shaft 321 being connected with this bar head 31, and second shaft 322 being connected with this first shaft 321, this bar head 31 is to be made up of austenite stainless steel with the first shaft 321 of screw rod 32, and the second shaft 322 of this screw rod 32 is to be made up of chrome-moly steel, preferably, the first shaft 321 of this bar head 31 and screw rod 32 is to be that stainless steel or SUS316 are that stainless steel is made with SUS304, the second shaft 322 of this screw rod 32 is to be that chrome-moly steel or SCM440 are that chrome-moly steel is made with SCM435, due to material qualitative factor, the color of the second shaft 322 can be deeper than the color of the first shaft 321.
Step 52, then carries out surface sclerosis with high frequency mode of heating to the second shaft 322 of this screw rod 32.
Step 53, this first base 3 is carried out to pickling processes, remove the just impurity on base 3 surfaces, in the present embodiment, be the acid solution 3 to 5 minutes that this first base 3 is immersed in to pH-value (pH) 1 to 2, acid solution is for example nitric acid, hydrochloric acid etc., immersion is water cleaning again after taking out, wash out acid solution and impurity, then remove moisture with the following bakings of 80 DEG C of baking temperatures, carry out again next step after cooling.
Step 54, this first base 3 is soaked in a transparent processing coating solution to 10 to 20 seconds, wherein the temperature of this transparent processing coating solution is room temperature (approximately 20 to 30 DEG C), composition has diethyl ethylene glycol butyl ether acetate (Diethylene Glycol Monobutyl Ether Acetate), organic and inorganic composite crosslinking water machine resin (has another name called water-based organic and inorganic copolymer resin, English name Water borne organic-inorganic copolymer resin), and water.In this transparent processing coating solution gross weight percentage 100 (100wt%), described diethyl ethylene glycol butyl ether acetate accounts for 10 to 20 weight percents (10wt% to 20wt%), organic and inorganic composite crosslinking water machine resin accounts for 15 to 30 weight percents (15wt% to 30wt%), and water accounts for 50 to 75 weight percents (50wt% to 75wt%).In the present embodiment, described diethyl ethylene glycol butyl ether acetate accounts for 15 weight percents (15wt%), organic and inorganic composite crosslinking water machine resin accounts for 22 weight percents (22wt%), and water accounts for 63 weight percents (63wt%).
Step 55, this first base 3 is taken out from this transparent processing coating solution, and transparent processing coating solution is evenly being covered in these first base 3 surfaces by centrifugal method, at the temperature of 80 DEG C ~ 110 DEG C, carry out the baking of 20 minutes again, cooling after the surface of this first base 3 be formed with a first transparent transparent processing film 41.
Step 56, is soaked in the first base 3 that is formed with the first transparent processing film 41 in a transparent processing coating solution again, and much more no longer the composition of the time of immersion, the temperature of this transparent processing coating solution, solution, with aforementioned all identical, repeats at this.
Step 57, the first base 3 that is formed with the first transparent processing film 41 is taken out from this transparent processing coating solution, and again by centrifugal method, transparent processing coating solution is evenly being covered in this to be formed with on the first base 3 of the first transparent processing film 41, at the temperature of 80 DEG C ~ 110 DEG C, carry out the baking of 20 minutes again, make the surface of this first transparent processing film 41 be formed with a second transparent transparent processing film 42 after cooling.
At the present embodiment, step 52 is higher by mode precision on controlling of high frequency heat hardening, can accurately carry out surface sclerosis to the second shaft 322 of this screw rod 32, and can not impact the first shaft 321.
And this step 54, 56, continue first base 3, when the first base 3 that is formed with the first transparent processing film 41 is immersed in transparent processing coating solution, under the condition of room temperature, just can carry out, recycling is by this step 55, 57 from transparent processing coating solution take out after, continue and evenly covering this first base 3 with centrifugation, on the first transparent processing film 41, at the temperature of 80 DEG C ~ 110 DEG C, carry out the baking of 20 minutes again, and this temperature is lower than the temperature in general carbon steel or steel alloy heat treatment process, so can not cause the rotten of steel, softening, the hardness at the second shaft 322 tips of this screw rod 32 can not be declined, and Yin Gaowen does not allow material change qualitative factor make the yield of manufacturing approach 100% yet.
The composition of transparent processing coating solution is diethyl ethylene glycol butyl ether acetate, organic and inorganic composite crosslinking water machine resin, and water, soak and dry and just can form afterwards transparent processing film, so without heavy metal compound and a large amount of electric energy, the cost consuming is low, can not produce serious industrial pollution, after reality test, approximately economize 16% cost yet.
And this first transparent processing film 41, the second transparent processing film 42 are clear, colorless, can know and find out that the color of the second shaft 322 can be different from the color of the first shaft 321, be the screw that uses composite and can easily judge, improve the identification of product.
The composite screws that the manufacture method of composite screws is made out according to the present invention, as shown in Figure 3, comprises a first base 3, one first transparent processing film 41, and one second transparent processing film 42.
This first base 3 comprises a bar head 31, and one by this bar head 31 screw rod 32 to downward-extension, this screw rod 32 has first shaft 321 being connected with this bar head 31, and second shaft 322 being connected with this first shaft 321, this bar head 31 is to be made up of austenite stainless steel with the first shaft 321 of screw rod 32, and the second shaft 322 of this screw rod 32 is to be made up of chrome-moly steel.
The surface that this first transparent processing film 41 is transparent and is formed on this first base 3, the composition of this first transparent processing film 41 has diethyl ethylene glycol butyl ether acetate, and organic and inorganic composite crosslinking water machine resin.
This second transparent processing film 42 is transparent and is formed on the surface of this first transparent processing film 41, and the composition of this second transparent processing film 42 has diethyl ethylene glycol butyl ether acetate, and organic and inorganic composite crosslinking water machine resin.
And the composite screws of the present embodiment need not form this first transparent processing film 41, the second transparent processing film 42 in hot environment, so can not cause the rotten, softening of steel, the brill having had is attacked ability, can be applicable to iron plate below thickness 17mm or the corrosion resistant plate below 6mm, more can directly cement wall be bored and be attacked; The composition of this first transparent processing film 41, the second transparent processing film 42 makes lubricity better simultaneously, and the resistance reducing friction can be better smooth and easy in drilling.
So the manufacture method of composite screws of the present invention and the composite screws of making have following advantage:
1. rust-proof effect is good
This case is, by high frequency mode of heating, the second shaft 322 of this screw rod 32 is carried out to surface sclerosis, and do not need if existing combined type screw is in the time making, that the first shaft 321, the second shaft 322 are carried out to Carburization Treatment, so there is not the problem of carbon distribution, and then can prevent corrosion, reach better rust-proof effect.
2. drilling ability is good
When soaking after this transparent processing coating solution, to toast at the temperature of 80 DEG C ~ 110 DEG C, much lower by the temperature of 200 DEG C ~ 220 DEG C compared to prior art, the tissue of steel is undergone no deterioration, soften, allow the tip of this second shaft 322 keep higher hardness, in cutting, bore to attack and have preferably ability.
3. contaminative is low, reduces manufacturing cost
In the process of manufacturing, after soaking, drying, will form this first transparent processing film 41, the second transparent processing film 42, therefore do not need to use a large amount of electricity, water, also can not produce electroplating effluent because electroplating, so environmental protection, contaminative are low, more reduce the expense of waste liquid post processing, recovery, manufacturing cost is declined.
4. identification is high
This first transparent processing film 41, the second transparent processing film 42 are transparent, colourless, so can be clear that the color of the second shaft 322 can be different from the color of the first shaft 321, the screw that uses composite and can easily judge, in the time of expansion product, can improve the identification of product, increase selling point.
5. screw in torsion low
Due to the factor of this first transparent processing film 41, these the second transparent processing film 42 compositions, have the characteristic that lubricity is good, frictional resistance is little, on brill is attacked, can reduce the torque value of screw-in for screw, do not need use larger strength just can be more smooth and easy on brill is attacked.
6. yield is high
This first base 3 soaks after this transparent processing coating solution, is to toast at the temperature of 80 DEG C ~ 110 DEG C, can avoid the rotten factor leading to social instability of material, improves the yield on producing.
In sum, the manufacture method of composite screws of the present invention and goods thereof, by first base 3 is repeated to be immersed in after transparent processing coating solution, form transparent, colourless this first transparent processing film 41, the second transparent processing film 42, can reduce and pollute, improve product identification, more can promote rust-preventing characteristic, the drilling of screw.
Claims (10)
1. a manufacture method for composite screws, is characterized in that: this manufacture method comprises following steps:
(a) prepare base at the beginning of, this first base comprises a bar head, and one by this bar head the screw rod to downward-extension, this screw rod has first shaft being connected with this bar head, and second shaft being connected with this first shaft, the first shaft of this bar head and screw rod is to be made up of austenite stainless steel, and the second shaft of this screw rod is to be made up of chrome-moly steel;
(b) this first base is soaked in to a transparent processing coating solution, wherein the composition of this transparent processing coating solution has diethyl ethylene glycol butyl ether acetate, organic and inorganic composite crosslinking water machine resin, and water;
(c) this first base is taken out from this transparent processing coating solution, and dehydration, baking, make the surface of this first base be formed with the first transparent processing film of layer of transparent after cooling;
(d) the first base that is formed with the first transparent processing film is soaked in a transparent processing coating solution; And
(e) the first base that is formed with the first transparent processing film is taken out from this transparent processing coating solution, and dehydration, baking, make the surface of this first transparent processing film be formed with the second transparent processing film of layer of transparent after cooling.
2. the manufacture method of composite screws according to claim 1, it is characterized in that: the transparent processing coating solution in step (b) is in gross weight percentage 100, described diethyl ethylene glycol butyl ether acetate accounts for 10 to 20 weight percents, organic and inorganic composite crosslinking water machine resin accounts for 15 to 30 weight percents, and water accounts for 50 to 75 weight percents.
3. the manufacture method of composite screws according to claim 2, it is characterized in that: the transparent processing coating solution in step (b) is in gross weight percentage 100, described diethyl ethylene glycol butyl ether acetate accounts for 15 weight percents, organic and inorganic composite crosslinking water machine resin accounts for 22 weight percents, and water accounts for 63 weight percents.
4. according to the manufacture method of the composite screws described in claim 1,2 or 3, it is characterized in that: in step (b), (d), the temperature of this transparent processing coating solution is 20 to 30 DEG C, and the time that this first base soaks is all 10 to 20 seconds.
5. according to the manufacture method of the composite screws described in claim 1,2 or 3, it is characterized in that: in step (c), (e), this first base, from this transparent processing coating solution takes out and dewaters, is all at the temperature of 80 DEG C to 110 DEG C, to toast 20 minutes.
6. according to the manufacture method of the composite screws described in claim 1,2 or 3, it is characterized in that: this manufacture method is also included in step (a) inferior step (a-1) afterwards, inferior step (a-1) is, with high frequency mode of heating, the second shaft of this screw rod is carried out to surface sclerosis.
7. the manufacture method of composite screws according to claim 6, it is characterized in that: this manufacture method is also included in time step (a-1) inferior step (a-2) afterwards, inferior step (a-2) is that this first base is carried out to pickling processes, removes the just impurity on base surface.
8. the manufacture method of composite screws according to claim 1, it is characterized in that: in step (a), the first shaft of this bar head and screw rod is that to be selected from SUS304 be that stainless steel or SUS316 are that stainless steel is made, and the second shaft of this screw rod is that to be selected from SCM435 be that chrome-moly steel or SCM440 are that chrome-moly steel is made.
9. a composite screws, is characterized in that:
Base at the beginning of this composite screws comprises one, one deck the first transparent processing film, and one deck the second transparent processing film, this first base comprises a bar head, and one by this bar head the screw rod to downward-extension, this screw rod has first shaft being connected with this bar head, and second shaft being connected with this first shaft, the first shaft of this bar head and screw rod is to be made up of austenite stainless steel, and the second shaft of this screw rod is to be made up of chrome-moly steel, the surface that this first transparent processing film is transparent and is formed on this first base, the composition of this first transparent processing film has diethyl ethylene glycol butyl ether acetate, and organic and inorganic composite crosslinking water machine resin, this the second transparent processing film is transparent and is formed on the surface of this first transparent processing film, the composition of this second transparent processing film has diethyl ethylene glycol butyl ether acetate, and organic and inorganic composite crosslinking water machine resin.
10. composite screws according to claim 9, it is characterized in that: the first shaft of this bar head and screw rod is that to be selected from SUS304 be that stainless steel or SUS316 are that stainless steel is made, the second shaft of this screw rod is that to be selected from SCM435 be that chrome-moly steel or SCM440 are that chrome-moly steel is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310024323.XA CN103934181A (en) | 2013-01-23 | 2013-01-23 | Manufacturing method of composite screw and product thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310024323.XA CN103934181A (en) | 2013-01-23 | 2013-01-23 | Manufacturing method of composite screw and product thereof |
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| CN103934181A true CN103934181A (en) | 2014-07-23 |
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| CN201310024323.XA Pending CN103934181A (en) | 2013-01-23 | 2013-01-23 | Manufacturing method of composite screw and product thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895903A (en) * | 2015-05-27 | 2015-09-09 | 含山县恒翔机械制造有限公司 | Anti-theft screw of sports car hub |
| CN104889687A (en) * | 2015-05-27 | 2015-09-09 | 含山县恒翔机械制造有限公司 | Method for manufacturing sports car hub anti-theft screw |
| CN107575456A (en) * | 2017-10-17 | 2018-01-12 | 苏州华丰不锈钢紧固件有限公司 | A kind of high intensity hexagon flange bolt |
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| WO2012039785A1 (en) * | 2010-09-22 | 2012-03-29 | Mcgard Llc | Chrome-plated fastener with organic coating |
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| CN1382918A (en) * | 2001-04-23 | 2002-12-04 | 希尔蒂股份公司 | Nail-shape fastener |
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| CN104895903A (en) * | 2015-05-27 | 2015-09-09 | 含山县恒翔机械制造有限公司 | Anti-theft screw of sports car hub |
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| CN107575456A (en) * | 2017-10-17 | 2018-01-12 | 苏州华丰不锈钢紧固件有限公司 | A kind of high intensity hexagon flange bolt |
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Application publication date: 20140723 |