CN110954648B - Method for judging drawing state of boron-coated steel wire - Google Patents
Method for judging drawing state of boron-coated steel wire Download PDFInfo
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- CN110954648B CN110954648B CN201911237934.6A CN201911237934A CN110954648B CN 110954648 B CN110954648 B CN 110954648B CN 201911237934 A CN201911237934 A CN 201911237934A CN 110954648 B CN110954648 B CN 110954648B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/16—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using titration
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Abstract
The invention discloses a method for judging the drawing state of a boron-coated steel wire, which comprises the steps of respectively heating and boiling a raw material steel wire sample which is not drawn and a target steel wire sample to be tested by water until a borax coating on the surface of the steel wire is completely dissolved, analyzing and calculating the content of borax in the dissolved solution by adopting an acid-base titration method, wherein the borax coating on the surface of the steel wire can be lost in the drawing process, and the better the drawing state is, the lower the loss is, the worse the drawing condition is, and the higher the loss is; the drawing state of the drawn steel wire is rapidly judged and compared by calculating the borax loss, engineering technicians and production personnel are effectively helped, the drawing state of the surface of the boron-coated steel wire is recorded, measured and evaluated by accurate data, and the control of the product quality is facilitated; uncertain factors such as subjective judgment ability and experience of operators are not needed, the reliability of the judgment result is high, and the judgment precision and stability are improved.
Description
Technical Field
The invention relates to the field of preparation methods of steel wires, in particular to a method for judging the drawing state of a boron-coated steel wire.
Background
In the production and preparation process of the steel wire, the steel wire is drawn in a dry mode, the steel wire is extruded through a die in a forced mode, the drawing state of the steel wire needs to be controlled in the process that the thick steel wire is changed into the thin steel wire, and therefore the situation that the drawing is damaged and the performance of the steel wire is affected is avoided. The method generally adopted at present is to observe the state of the surface of the steel wire and the drawing stripes by naked eyes to measure the drawing state of the steel wire, wherein the brighter the steel wire is, the incomplete lubricating coating is indicated, or the deeper and more the drawing stripes are, the worse the drawing state is indicated; the determination method is simple and intuitive, but only can be used for qualitative observation and determination, the subjectivity is strong, a data quantization comparison cannot be performed, when the process improvement is performed, the comparison and the recording cannot be performed through a quantized data, uncertain factors such as subjective determination capability and experience of an operator are too depended on, the credibility is low, the drawing state of the steel wire without drawing stripes cannot be measured and compared corresponding to the steel wire without the drawing stripes, data support cannot be provided for the process improvement, and the determination accuracy is influenced.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides the method for judging the drawing state of the boron-coated steel wire, which has reliable data and improves the judgment precision and stability by depending on the subjective judgment capability and experience influence of operators.
The technical scheme is as follows: in order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a method for judging the drawing state of a boron-coated steel wire comprises the following steps:
1) firstly, respectively taking B unit lengths of a raw material steel wire sample A0 which is not subjected to drawing and a target steel wire sample A1 to be detected after drawing; cutting into small sections, and placing in two beaker containers respectively;
2) respectively adding water into the two beaker containers, heating and boiling until the borax coating on the surface of the steel wire is completely dissolved, taking out the steel wire, washing for 2-3 times by using hot distilled water, allowing the washed hot distilled water to flow into the beaker containers, and naturally cooling the solution in the two beaker containers to room temperature;
3) respectively dripping 2-3 drops of methyl orange indicator into two beaker containers, carrying out titration from yellow to orange red by using a hydrochloric acid standard solution as an end point, and respectively recording consumed hydrochloric acid references V0 and V1;
4) the borax content on A0 and A1 was calculated using the following formulas:
in the formula (1), (2):
W0-Borax content, g/m, in raw Steel wire sample A02；
W1-borax content, g/m, in target steel wire sample A1 to be detected2；
C is the molar concentration of the hydrochloric acid standard solution, mol/L;
d0, d 1-two sample wire diameters, mm;
v0, V1-two samples titrate the volume of hydrochloric acid consumed, mL, respectively;
b-length of wire, m;
291.21-molar mass of borax pentahydrate, g/mol;
5) calculating the loss degree of the steel wire according to a formula (3), recording the loss degree by using S, wherein the larger the S value is, the worse the drawing state is;
more preferably, the unit length of B is 0.7 to 1.3 m.
Further, the unit length of B is 1.0 m; the appropriate sample length is beneficial to improving the accuracy of the titration result and the convenience degree of operation.
Further, the concentration of the hydrochloric acid standard solution is 0.01 mol/L.
When the loss degrees of two target samples to be tested are compared, the S values are respectively measured, the measured results are compared, the S values are small, and the drawing state is better, so that the drawing process effect is accurately compared with the recording support and quantification of data when the process is improved.
Has the advantages that: the invention has the following advantages: (1) tools used for operation are common laboratory products, reagents are low in cost and convenient to operate; (2) the drawing state of the surface of the boron-coated steel wire is recorded, measured and evaluated by accurate data, so that the quality of the product is conveniently controlled; (3) uncertain factors such as subjective judgment ability and experience of operators are not needed, the reliability of the judgment result is high, and the judgment precision and stability are improved.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
the sources of drug drugs used in the examples are as follows:
hydrochloric acid, analytically pure, the manufacturer is Yonghua chemical technology (Jiangsu) limited;
preparing a methyl orange indicator: dissolving 0.1g of methyl orange medicine in 60mL of ethanol, adding water to dilute to 100mL, and completely dissolving to obtain the compound preparation;
methyl orange, manufacturer is Douduo Chemicals Co., Ltd;
ethanol, the manufacturer is chemical reagent limited company of national medicine group;
the sample A0 is a boron-coated steel wire sample obtained from a workshop of Zhenjiang wire-resistant novel material, Inc., and the model is 2.80 of a boron-coated steel wire subjected to intermediate heat treatment;
sample a1, sample a2 is a steel wire sample after two drawdowns.
A method for judging the drawing state of a boron-coated steel wire comprises the following steps:
1) firstly, respectively taking a raw material steel wire sample A0 which is not subjected to drawing, a target steel wire sample A1 to be detected after drawing, and a target steel wire sample A2 to be detected after drawing, wherein the thicknesses of the raw material steel wire sample A0, the target steel wire sample A1 and the target steel wire sample A2 are respectively 1.0 m; cutting into small segments, and placing in three beaker containers respectively;
2) respectively adding water into the three beaker containers, heating and boiling until the borax coating on the surface of the steel wire is completely dissolved, taking out the steel wire, washing for 2-3 times by using hot distilled water, allowing the washed hot distilled water to flow into the beaker containers, and naturally cooling the solution in the three beaker containers to room temperature;
3) respectively dripping 2-3 drops of methyl orange indicator into three beaker containers, carrying out titration from yellow to orange red by using 0.01mol/L hydrochloric acid standard solution, and respectively recording consumed hydrochloric acid references of V0, V1 and V2;
4) the borax content on A0 and A1 was calculated using the following formulas:
in the formula:
w0, W1 and W1-borax content in raw steel wire sample A0, target steel wire sample A1 to be detected and target steel wire sample A2, g/m2；
C is the molar concentration of the hydrochloric acid standard solution, mol/L;
d0, d1, d 2-three sample wire diameters, mm;
v0, V1, V2-three samples titrated the volume of hydrochloric acid consumed, mL, respectively;
291.21-molar mass of borax pentahydrate, g/mol;
5) the degree of wear of the two sample wires was calculated according to the following formula and recorded as S1 and S2,
and the wear degrees of the two target samples to be tested are compared, and S1 and S2 are compared, so that the drawing state is smaller and better.
Specific test and calculation data are shown in table 1:
TABLE 1 analysis of the judgment data of the drawing state of the steel wires of samples A1 and A2
As can be seen from the data records in Table 1, S1 < S2, therefore, the borax coverage on the surface of sample A1 is better than that of sample A2, and the drawing state is better.
The judging method effectively helps engineering technicians and production personnel to record, measure and evaluate the drawing state of the surface of the boron-coated steel wire by using accurate data, and facilitates the management and control of product quality; uncertain factors such as subjective judgment ability and experience of operators are not needed, the reliability of the judgment result is high, and the judgment precision and stability are improved.
Claims (4)
1. A method for judging the drawing state of a boron-coated steel wire is characterized by comprising the following steps:
1) firstly, respectively taking B unit lengths of a raw material steel wire sample A0 which is not subjected to drawing and a target steel wire sample A1 to be detected after drawing; cutting into small sections, and placing in two beaker containers respectively; the unit length of B is 0.7-1.3 m;
2) respectively adding water into the two beaker containers, heating and boiling until the borax coating on the surface of the steel wire is completely dissolved, taking out the steel wire, washing the steel wire for 2-3 times by using hot distilled water, enabling the washed hot distilled water to flow into the beaker containers, and naturally cooling the solution in the two beaker containers to room temperature;
3) respectively dripping 2-3 drops of methyl orange indicator into the two beaker containers, carrying out titration from yellow to orange red by using a hydrochloric acid standard solution as an end point, and respectively recording the volumes of consumed hydrochloric acid V0 and V1;
4) the borax content on A0 and A1 was calculated using the following formulas:
in the formula (1), (2):
W0-Borax content, g/m, in raw Steel wire sample A02；
W1-borax content, g/m, in target steel wire sample A1 to be detected2；
C is the molar concentration of the hydrochloric acid standard solution, mol/L;
d0, d 1-two sample wire diameters, mm;
v0, V1-two samples titrate the volume of hydrochloric acid consumed, mL, respectively;
b-length of wire, m;
291.21-molar mass of borax pentahydrate, g/mol;
5) calculating the loss degree of the steel wire according to a formula (3), recording the loss degree by using S, wherein the larger the S value is, the worse the drawing state is;
2. the method for determining the drawing state of the boron-coated steel wire according to claim 1, characterized in that: the unit length of B is 1.0 m.
3. The method for determining the drawing state of the boron-coated steel wire according to claim 1, characterized in that: the concentration of the hydrochloric acid standard solution is 0.01 mol/L.
4. The method of claim 1, wherein when the degree of wear of two target samples to be measured is compared, the S value is measured, and the drawn state is better when the S value is smaller than the measured result.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU86467A1 (en) * | 1986-06-12 | 1988-01-20 | Centre Rech Metallurgique | CONTINUOUS PROCESS OF MANUFACTURING STEEL WIRE |
| CN1059361A (en) * | 1990-08-22 | 1992-03-11 | 远东钢丝针布厂 | Wire cold-drawing lubricant and preparation method thereof |
| JP2000192149A (en) * | 1998-12-28 | 2000-07-11 | Bridgestone Corp | Production of steel wire |
| CN208050198U (en) * | 2018-02-07 | 2018-11-06 | 山东兴达钢帘线有限公司 | A kind of guarantee steel wire surface 360 ° of control devices uniformly coated of borax |
-
2019
- 2019-12-06 CN CN201911237934.6A patent/CN110954648B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU86467A1 (en) * | 1986-06-12 | 1988-01-20 | Centre Rech Metallurgique | CONTINUOUS PROCESS OF MANUFACTURING STEEL WIRE |
| CN1059361A (en) * | 1990-08-22 | 1992-03-11 | 远东钢丝针布厂 | Wire cold-drawing lubricant and preparation method thereof |
| JP2000192149A (en) * | 1998-12-28 | 2000-07-11 | Bridgestone Corp | Production of steel wire |
| CN208050198U (en) * | 2018-02-07 | 2018-11-06 | 山东兴达钢帘线有限公司 | A kind of guarantee steel wire surface 360 ° of control devices uniformly coated of borax |
Non-Patent Citations (1)
| Title |
|---|
| 钢丝无中间热处理直接拉拔生产探讨;姚海东等;《金属制品》;20091231;第35卷(第6期);第18-19页 * |
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