CN104250716A - Activation process for pretreatment of coil rod wire drawing hot galvanizing - Google Patents
Activation process for pretreatment of coil rod wire drawing hot galvanizing Download PDFInfo
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- CN104250716A CN104250716A CN201310268950.8A CN201310268950A CN104250716A CN 104250716 A CN104250716 A CN 104250716A CN 201310268950 A CN201310268950 A CN 201310268950A CN 104250716 A CN104250716 A CN 104250716A
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Abstract
The invention discloses an activation process for pretreatment of coil rod wire drawing hot galvanizing, the coil rod wire drawing hot galvanizing process includes the following steps: pickling for rust removal, phosphating, drawing, chemical activation, annealing reducing and hot-dip galvanizing, wherein the chemical activation process activation solution comprises the following components by weight: 54-58g / L of ammonium fluoride, 32-36g / L of nickel chloride, 72-76g / L of boric acid, 15-18g / L of citric acid, 6-10g / L of malonic acid, and balance of ethylene glycol, and the activation process is as follows: the activation solution comprising the components is put into an activation bath with a pulley block, and is diluted for 4-5 times, the activation solution temperature is controlled at 55-75 DEG C, and the activation time is 2-4 seconds.
Description
Technical field
The present invention relates to field of metal surface treatment technology, particularly relate to a kind of for the pretreated activating process of the hot candied pot galvanize of wire rod.
Background technology
The pot galvanize of wire rod be the most substantially, one of the most effective anticorrosion process.Current wire rod hot galvanizing method is solvent method and gas reduction method mainly.Solvent method is a kind of hot candied and hot dipping line independence separately, many low walking speeds of steel wire, the hot plating technology method of simultaneously plating.For annealed wire, independently heat-treatment lines or online annealing process section be had.Specifically: on hot candied line, wire rod is pulled into steel wire, then steel wire is transported on heat-treatment lines and carries out anneal, or the hot dipping line of online annealing carries out following technique: degreasing, annealing, pickling, help plating, and then carry out hot dip.There is following problem in existing solvent method:
1. environmental issue: on the one hand owing to adopting acid cleaning process, the acid gas produced when the discharge (often producing spent acid and 4 tons of spent acid wash waters that one ton of steel wire will produce more than 30 kilogram) of spent acid and acid washing water and pickling etc. all can contaminate environment.Another aspect is that the discharge of other chemical agents also can meet with into pollution.
2. energy consumption is high: because annealed wire and hot dipping line are independent separately, steel wire will carry out twice heating, and heat waste is large; Even online annealing also needs twice heating (namely to need, by steel wire heating to annealing temperature, then to cool during annealing; Again steel wire is reheated hot dip temperature during hot dip), reheat steel wire per ton and at least lose 100 degree of electric energy, waste mass energy.In addition, if adopt the technique that multi-thread low speed plates simultaneously, because production face is wide, heat radiation is many, and energy consumption is also high.
3. complex process, production efficiency is low: one of its reason is the wire drawing of hot plating technology, annealing and each line independent operating of hot plating technology, and operation is various, complex process, and production efficiency is low; Two of reason is, the pickling of hot plating technology, help plating, dry and hot dip all needs the time, therefore its DV value (DV value refer to steel wire diameter and Trace speed become to amass, expression production efficiency) be not more than 90, generally about 60.
4. production cost is high: owing to there are the problems referred to above, and cause production cost high, product profit is low, and competitive power is poor.The gas reduction method of traditional technology is a kind of hot dip of steel wire method proposed in 20 th Century by Pole's Sendzimir, and it has been used successfully in heat zinc coating plate production line.The principle of work of gas reduction method is by the temperature of low-level oxidation layer more than 550 degree of workpiece surface, becomes pure iron, reach the object of clean workpiece surface thus in the furnace reduction being full of reducing atmosphere.The method annealing and reduction are carried out simultaneously, have energy-saving effect;
The method, without pickling, solves environmental issue.But also there is following problem in gas method:
1., because conventional art adopts the hot-dipping method of multifibres low speed, therefore drawn wire and follow-up hot dipping line cannot be connected to form the production of serialization.Because two lines are discrete, especially before and after actual production, operation interval time is longer, and the steel wire after drawing certainly leads to corrosion.And gas reduction method only just can revert to the condition of surface that hot dip requires when Steel Wire Surface non-corroding.Therefore, gas reduction method cannot for the hot plating technology of steel wire.Unless added one cleanup acid treatment above again to go out the iron rust of steel wire, bring so again the problem of environmental protection, nor economical (because just can directly hot dip after pickling, there is no need to implement reduction clean surface again).External big companies, produce at elaborate scheme or drop into wire-drawing equipment more, can continue drawing and hot dip two procedures well, guarantees steel wire non-corrosive before hot dip, also can adopt gas reduction method.Even so, also there are following 2 problems in the method.
2. high-tensile steel wires cannot be used for.Because reduction temperature is high, high strength cannot be ensured.Therefore the method can only be used for lower strength wire (the soft state steel wire of low-carbon (LC)).The hot dip demand of full specification wire can not be met.Domestic gas method is mainly used on coil of strip hot plating technology;
3. production efficiency is low.Though a small amount of report having gas method to produce for Mild Steel Wire abroad, its production line is very long, and when DV value 120, only reducing process section just has 18 meters long, and the raising of production efficiency is restricted.
Summary of the invention
The object of the invention is to propose one for the pretreated activating process of the hot candied pot galvanize of wire rod, this technique, by the adjustment to activation solution component, makes drawn steel wire form fresh and active high surface, for subsequent thermal zinc immersion is laid a good foundation.
For reaching this object, the present invention by the following technical solutions:
A kind of for the pretreated activating process of the hot candied pot galvanize of wire rod, the hot candied hot dip galvanizing process of described wire rod comprises the steps: acid pickling and rust removing, phosphatization, drawing, chemical activation, annealing reduction, galvanizing, in wherein said chemical activation operation, activation solution composition is by weight percentage: Neutral ammonium fluoride 54-58g/L, nickelous chloride 32-36g/L, boric acid 72-76g/L, citric acid 15-18g/L, propanedioic acid 6-10g/L, surplus is ethylene glycol, activating process is: the activation solution with above-mentioned composition is put into the activated bath with tackleblock, dilution 4-5 doubly, the temperature controlling activation solution is 55-75 DEG C, soak time is 2-4 second.
The present invention has following beneficial effect:
1) the present invention is by adjustment to activation solution component, make drawn steel wire form fresh and active high surface, and this surface increases activity further after anneal, makes the bonding force of zinc layers and base material after galvanizing higher.
2) the painting boron process before drawing of the prior art is replaced with bonderizing, the phosphatize phosphate coat formed is equivalent to the effect of " lubricant ", help avoid the adhesion between wire rod and drawing die, can significantly reduce friction, reduce the wearing and tearing of power consumption and mould, blank can cold-drawn twice or three times and do not need the process such as annealing continuously because have employed bonderizing, thus simplify technique significantly, and production cost also obviously reduces.
Embodiment
Embodiment one
A kind of for the pretreated activating process of the hot candied pot galvanize of wire rod, the hot candied hot dip galvanizing process of described wire rod comprises the steps: acid pickling and rust removing, phosphatization, drawing, chemical activation, annealing reduction, galvanizing, in wherein said chemical activation operation, activation solution composition is by weight percentage: Neutral ammonium fluoride 54g/L, nickelous chloride 36g/L, boric acid 72g/L, citric acid 18g/L, propanedioic acid 6g/L, surplus is ethylene glycol, activating process is: the activation solution with above-mentioned composition is put into the activated bath with tackleblock, dilute 4 times, the temperature controlling activation solution is 75 DEG C, soak time is 2 seconds.
Embodiment two
A kind of for the pretreated activating process of the hot candied pot galvanize of wire rod, the hot candied hot dip galvanizing process of described wire rod comprises the steps: acid pickling and rust removing, phosphatization, drawing, chemical activation, annealing reduction, galvanizing, in wherein said chemical activation operation, activation solution composition is by weight percentage: Neutral ammonium fluoride 58g/L, nickelous chloride 32g/L, boric acid 76g/L, citric acid 15g/L, propanedioic acid 10g/L, surplus is ethylene glycol, activating process is: the activation solution with above-mentioned composition is put into the activated bath with tackleblock, dilute 5 times, the temperature controlling activation solution is 55 DEG C, soak time is 4 seconds.
Embodiment three
A kind of for the pretreated activating process of the hot candied pot galvanize of wire rod, the hot candied hot dip galvanizing process of described wire rod comprises the steps: acid pickling and rust removing, phosphatization, drawing, chemical activation, annealing reduction, galvanizing, in wherein said chemical activation operation, activation solution composition is by weight percentage: Neutral ammonium fluoride 56g/L, nickelous chloride 34g/L, boric acid 74g/L, citric acid 17g/L, propanedioic acid 8g/L, surplus is ethylene glycol, activating process is: the activation solution with above-mentioned composition is put into the activated bath with tackleblock, dilute 4.5 times, the temperature controlling activation solution is 65 DEG C, soak time is 3 seconds.
Claims (1)
1. one kind for the pretreated activating process of the hot candied pot galvanize of wire rod, it is characterized in that, the hot candied hot dip galvanizing process of described wire rod comprises the steps: acid pickling and rust removing, phosphatization, drawing, chemical activation, annealing reduction, galvanizing, in wherein said chemical activation operation, activation solution composition is by weight percentage: Neutral ammonium fluoride 54-58g/L, nickelous chloride 32-36g/L, boric acid 72-76g/L, citric acid 15-18g/L, propanedioic acid 6-10g/L, surplus is ethylene glycol, activating process is: the activation solution with above-mentioned composition is put into the activated bath with tackleblock, dilution 4-5 doubly, the temperature controlling activation solution is 55-75 DEG C, soak time is 2-4 second.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310268950.8A CN104250716A (en) | 2013-06-28 | 2013-06-28 | Activation process for pretreatment of coil rod wire drawing hot galvanizing |
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| CN201310268950.8A CN104250716A (en) | 2013-06-28 | 2013-06-28 | Activation process for pretreatment of coil rod wire drawing hot galvanizing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105414220A (en) * | 2015-11-05 | 2016-03-23 | 贵州钢绳股份有限公司 | Production technology of high strength galvanized steel wires |
| CN111123452A (en) * | 2019-12-26 | 2020-05-08 | 江苏英杰光缆科技有限公司 | Method for improving strength of optical cable |
-
2013
- 2013-06-28 CN CN201310268950.8A patent/CN104250716A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105414220A (en) * | 2015-11-05 | 2016-03-23 | 贵州钢绳股份有限公司 | Production technology of high strength galvanized steel wires |
| CN111123452A (en) * | 2019-12-26 | 2020-05-08 | 江苏英杰光缆科技有限公司 | Method for improving strength of optical cable |
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Application publication date: 20141231 |