CN108465699A - A kind of preparation method of 304 abrasion-proof stainless steel silk - Google Patents
A kind of preparation method of 304 abrasion-proof stainless steel silk Download PDFInfo
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- CN108465699A CN108465699A CN201810214309.9A CN201810214309A CN108465699A CN 108465699 A CN108465699 A CN 108465699A CN 201810214309 A CN201810214309 A CN 201810214309A CN 108465699 A CN108465699 A CN 108465699A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
- B21B1/14—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel in a non-continuous process, i.e. at least one reversing stand
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
- C21D8/065—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
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Abstract
A kind of preparation method of 304 abrasion-proof stainless steel silk：1) 1.3 times of default finished diameters of diameter ﹥ of 304 stainless steel silk material of raw material are chosen；2) 304 stainless steel silk materials are annealed；3) multi pass drawing processing is carried out to the stainless steel silk material after annealing, such as reaches finished size, then finished product；If not be finished size, anneal again, it is air-cooled arrive room temperature, to Drawing-anneal after stainless steel silk material；4) when 1.3 times of default finished diameters of diameter ＞ of the stainless steel silk material after Drawing-anneal, then repeat step 3, when the default finished diameter in diameter≤1.3 times of the stainless steel silk material after Drawing-anneal, then carry out step 5；5) drawing process is carried out to the stainless steel silk material after Drawing-anneal, is drawn to finished size, 304 abrasion-proof stainless steel silk finished products are made；304 abrasion-proof stainless steel silk finished products prepared by the method for the present invention, tensile strength improve 1~3 times, and micro-vickers hardness improves 2~3 times, and polishing machine improves 5~30%.
Description
Technical field
The invention belongs to abrasion-proof stainless steel silk production technology range, a kind of 304 abrasion-proof stainless steel silk is in particular, provided
Preparation method.
Background technology
The exploitation of deep-well deep-sea is with products such as wear-resisting steel-wire screen, sieve plates due in height mill and corroding etc. under particular surroundings for a long time
An important factor for work, life of product is often shorter, and performance deficiency has become influence modern times production efficiency.Therefore, how to select
It selects and improves the wear-resisting property of silk material and be of great significance to engineering production to increase its working life.304 stainless steels are because having
Strong processing hardening tendency and excellent corrosion resisting property, are the optimal selections of the products material such as wear-resisting steel-wire screen, sieve plate
One of.
The performance and quality of 304 abrasion-proof stainless steel silks by composition of raw material and steel manufacturing process other than being influenced, steel
The processing technology of silk also has decisive role to its performance and quality, it is however generally that the steel wire for wear-resisting silk material can pass through heat
The method rolled obtains, or such as by some conventional Hubbing methods：Raw material wire rod → annealing → descales → and drawing → more
Secondary annealing drawing → finished product must usually be obtained according to the size of product by multi pass drawing technique.
However, in place of by the wear-resisting steel wire obtained by hot rolling means or conventional hubbing but Shortcomings, because of such
Wear-resisting silk material shows the wear-resisting steel wire product of traditional hot rolling due to being chronically at high temperature and corrosive environment working environment, production practices
Service life is very short, and is longer than the wear-resisting steel wire of hot rolling by the conventional drawing obtained wear-resisting steel wire service life, but does not send out still
Shoot the potentiality of material itself.
Invention content
In view of the deficiencies of the prior art, the present invention provides a kind of preparation method of 304 abrasion-proof stainless steel silk, pass through control
Drawing deformation amount and annealing temperature make wear-resisting steel wire deform upon induced martensite phase transformation to obtain more high-wearing feature.
A kind of preparation method of 304 abrasion-proof stainless steel silk of the present invention, specifically comprises the following steps：
Step 1, selection：
Choose 1.3 times of default finished diameters of diameter ﹥ of 304 stainless steel silk material of raw material；
Step 2, it anneals：
By 304 stainless steel silk materials, made annealing treatment, annealing temperature be 650~1000 DEG C, annealing time be 30~
The stainless steel silk material after annealing is made in 150min；
Step 3, multi pass drawing is handled：
Multi pass drawing processing is carried out to the stainless steel silk material after annealing, the drawing deformation amount of single pass is 15~45%,
When accumulative deflection reaches 30~65%, if the stainless steel silk material after drawing reaches finished size, be made 304 it is wear-resisting not
Become rusty steel wire；If not up to finished size is made annealing treatment again, annealing temperature is 500~850 DEG C, annealing time 20
~30min, then it is air-cooled to room temperature, obtain the stainless steel silk material after Drawing-anneal；
Step 4, condition judgment：
When 1.3 times of default finished diameters of diameter ＞ of the stainless steel silk material after Drawing-anneal, then step 3 is come back for,
When the default finished diameter in diameter≤1.3 times of the stainless steel silk material after Drawing-anneal, step 5 is carried out；
Step 5, the drawing process before finished product：
Single pass or multi pass drawing are carried out, it is 15~45% to control every time drawing deformation amount, is drawn to end product rule
It is very little, 304 abrasion-proof stainless steel silk finished products are made.
A kind of preparation method of above-mentioned 304 abrasion-proof stainless steel silk, wherein：
In the step 1,304 stainless steel silk materials are 304 stainless steel wire rods, and it is cold-drawn state silk material to preset finished product.
In the step 2, annealing uses shaft furnace.
In the step 2, the principle of annealing temperature selection is so that silk material is fully softened, while controlling tissue and not occurring to tie again
Jingjing grain length is big.
In the step 3, before carrying out drawing process, one end of the stainless steel bar after annealing is carried out to grind sharp processing, and
Scale removal is prepared for drawing, and scale removal uses shot-blasting machine.
In the step 3, the drawing deformation amount of single pass is 15~45%, so that it deforms upon induced martensite phase
Become, promotes the intensity and wear-resisting property of silk material.
In the step 3, annealing moves back stove using hydrogen.
In the step 3, the purpose of selection of annealing temperature is in order to retain cold-drawn state tissue, by deformation induced martensitic phase
Strain-induced martensite remains caused by becoming；Annealing temperature is not higher than the recrystallization temperature of silk material.
In the step 3, add up deflectionIt is recalculated after annealing every time,Wherein,
S1Between referring to twice annealing, the cross-sectional area of stainless steel silk material after drawing；S0Refer between twice annealing, it is stainless before drawing
The cross-sectional area of steel wire material.
In the step 5, annealing it is not mingled among drawing process.
In the step 1, a diameter of 2.8~10mm of raw material；In the step 5, can 304 abrasion-proof stainless steel silk finished products it is straight
Diameter is 8.3~2.3mm.
Technical scheme of the present invention solve technical problem thinking be：During austenitic stainless steel wires cold drawing
Relate generally to three kinds of deformation mechanisms：The sliding of dislocation, twin and phase transformation.When material is after cold drawing, position can be made first
Dislocation density increases, and the reciprocation enhancing between dislocation continues to increase, the sliding of dislocation becomes difficult with deflection.Cause
Austenite has lower stacking fault energy, so being easy to carry out resistance to deformation in a manner of twin, increasing for twin lamella is equivalent to
The number of grain boundaries of matrix is set to increase, the increase of grain boundary area largely limits the movement of dislocation, generates processing hardening effect
Fruit.Conventional drawing process generally carries out hydrodynamics with both deformation mechanisms, therefore conventional drawing is obtained wear-resisting
The service life of steel wire material is longer than the wear-resisting steel wire of rolled.However, if continuing the deflection of increase drawing, when twin to intensity
Contribution when reaching ultimate attainment, strain-induced martensite starts to generate, at this point, the intensity of wear-resisting steel wire can rise to higher grade
Not, wear-resisting property also just has the promotion of bigger.
The preparation method of the 304 abrasion-proof stainless steel silks of the present invention, compared with prior art, advantageous effect is：
Compared with Hot rolling and conventional hubbing, control aximal deformation value, which can induce, deforms upon induced martensite phase transformation,
Control low temperature thermal oxidation can accumulate cold-drawn state tissue, and this preparation method can be by tensile strength compared to traditional preparation methods
1~3 times is improved, micro-vickers hardness improves 2~3 times, and polishing machine improves 5~30%；And control aximal deformation value can be reduced
Drawing passes shortens engineering time, the wear-resisting steel wire being had excellent performance quickly and in high quality；On the other hand, annealing is reduced
Temperature can be energy saving, reduces enterprise's production cost.
In conclusion making austenite abrasion-proof steel wire send out during the drawing process by controlling drawing deformation amount and annealing temperature
Raw deformation induced martensitic traoformation, while the good martensitic structure of wear-resisting property being remained, it can be obtained higher wear-resisting
Property.
Description of the drawings
The metallograph of stainless steel bar after the annealing obtained of 1 step 2 of Fig. 1 embodiment of the present invention；
304 stainless steel silk material optical microstructure made from Fig. 2 comparative examples；
The metallograph of 304 cold-drawn state silk material made from 1 step 5 of Fig. 3 embodiment of the present invention；
304 cold-drawn state silk made from stainless steel bar, step 5 after the annealing obtained of 1 step 2 of Fig. 4 embodiment of the present invention
The XRD diagram of 304 stainless steel silk materials made from material and comparative example；
The wear rate of 304 cold-drawn state silk material and hardness are with drawing deformation amount made from 1 step 5 of Fig. 5 embodiment of the present invention
Variation tendency；
The tensile strength of 304 cold-drawn state silk material made from 1 step 5 of Fig. 6 embodiment of the present invention with drawing deformation amount change
Change trend.
Specific embodiment
In following embodiment, step 2 annealing device uses R1-B0-10 shaft furnaces；Step 3 annealing device uses R6-
L20-12 hydrogen moves back stove；Scale removal uses Q3710 shot-blasting machines；Drawing uses JCJXl wire drawing machinees；
Embodiment 1
A kind of preparation method of 304 abrasion-proof stainless steel silk, specifically comprises the following steps：
Step 1, selection：
The 304 stainless steel silk materials for choosing a diameter of 8mm of raw material preset finished product according to the wear-resisting steel wire product specification of enterprise
A diameter of 3.4mm；
Step 2, it anneals：
The 304 stainless steel silk materials of a diameter of 8mm are annealed at a temperature of 800 DEG C, annealing time 1h；Annealing temperature
The principle for spending selection is so that silk material is fully softened, while controlling tissue recrystal grain does not occur and growing up.
Step 3, multi pass drawing is handled：
Before carrying out drawing process, one end of the stainless steel bar after annealing is carried out to grind sharp processing, and scale removal, is
Drawing is prepared.
First, the first passage drawing process carried out to the stainless steel silk material after annealing with wire drawing machine, at the first passage drawing
The a diameter of 7mm of stainless steel silk material after reason, the drawing deformation amount 23% of single pass, cumulative deformation 23%；
Secondly, the second passage drawing process is carried out to the stainless steel silk material after the first passage drawing process, the second passage is drawn
The a diameter of 6mm of stainless steel silk material that pulls out that treated, the drawing deformation amount of single pass is 27%, and drawing cumulative deformation is twice
44%, default finished size is not reached, and the stainless steel silk material after the second passage drawing process is moved back at a temperature of 700 DEG C
Fire processing, annealing time 20min, then it is air-cooled to room temperature, obtain the stainless steel silk material after Drawing-anneal.The selection of annealing temperature
Principle is to try to retain cold-drawn state tissue, and strain-induced martensite caused by deformation induced martensitic traoformation is remained；Annealing
Temperature is not higher than the recrystallization temperature of silk material；
The drawing deformation amount of single pass is 15~45%, so that it deforms upon induced martensite phase transformation, promotes silk material
Intensity and wear-resisting property；
Step 4, condition judgment：
When 1.3 times of default finished diameters of diameter ＞ of the stainless steel silk material after Drawing-anneal, then step 3 is come back for：
Before carrying out drawing process, one end of the stainless steel bar after annealing is carried out to grind sharp processing, and scale removal, standard is done for drawing
It is standby.
First, third passage drawing process carried out to the stainless steel silk material after annealing with wire drawing machine, at third passage drawing
The a diameter of 5mm of stainless steel silk material after reason, the drawing deformation amount 31% of single pass, cumulative deformation 31%；
Secondly, four-pass drawing process is carried out to the stainless steel silk material after third passage drawing process, four-pass is drawn
The a diameter of 4.3mm of stainless steel silk material that pulls out that treated, the drawing deformation amount of single pass is 26%, and drawing cumulative deformation is twice
49%, default finished size is not reached, and the stainless steel silk material after four-pass drawing process is moved back at a temperature of 700 DEG C
Fire processing, annealing time 20min, then it is air-cooled to room temperature, obtain the stainless steel silk material after Drawing-anneal.
Step 5：Drawing process before finished product：
The drawing deformation amount of a diameter of 5mm controls single pass of stainless steel silk material after 5th drawing process is 22%, is tired out
Product deflection is 22%, does not reach finished size, carries out the 6th drawing process.
The drawing deformation amount of a diameter of 4.3mm controls single pass of stainless steel silk material after 6th drawing process is 20%,
Cumulative deformation is 37%, finally obtains the cold-drawn state silk material of a diameter of 3.4mm.
It is not mingled with annealing among drawing process, after obtaining product size, no longer carries out annealing softening yet, silk material is made to protect
Cold-drawn state tissue is held, the martensitic structure generated by deformation induced by drawing process is remained, to improve silk material
Wear-resisting property.
The specific drawing process of the present embodiment is as shown in table 1~3：
Table 1 anneal for the first time before drawing process
Drawing process before second of the annealing of table 2
Table 3 anneal for the third time before drawing process
The metallograph of stainless steel bar after annealing prepared by the present embodiment step 2 is as shown in Figure 1；Its XRD spectrum such as Fig. 4
Shown in (rolled homologous thread)；The metallograph of a diameter of 3.4 cold-drawn state silk material that step 5 is prepared as shown in figure 3, its
Shown in XRD collection of illustrative plates such as Fig. 4 (homologous thread of the present invention), hardness and wear rate with drawing deformation amount changing rule such as Fig. 5
Shown, tensile property is as shown in Figure 6 with the changing rule of drawing deformation amount.
Comparative example
The 304 stainless steel silk materials for choosing the raw material 8mm of embodiment, it is moved back at a temperature of 900~1000 DEG C
Fire, annealing time are 2~4h, then carry out single pass drawing, and drawing deformation amount is 5~12%；It is wherein chosen at 1000 DEG C
After keeping the temperature 4h, drawing deformation amount is 8%, and the optical microstructure of stainless steel wire obtained is as shown in Fig. 2, its XRD spectrum such as figure
Shown in 4 (conventional drawing homologous threads).
A kind of preparation method of 304 abrasion-proof stainless steel silk, specifically comprises the following steps：
Step 1, selection：
The 304 stainless steel silk materials for choosing a diameter of 8mm of raw material preset finished product according to the wear-resisting steel wire product specification of enterprise
A diameter of 3.4mm；
Step 2, it anneals：
The 304 stainless steel silk materials of a diameter of 8mm are annealed at a temperature of 800 DEG C, annealing time 1h；Annealing temperature
The principle for spending selection is so that silk material is fully softened, while controlling tissue recrystal grain does not occur and growing up.
Step 3, multi pass drawing is handled：
Before carrying out drawing process, one end of the stainless steel bar after annealing is carried out to grind sharp processing, and scale removal, is
Drawing is prepared.
First, the first passage drawing process carried out to the stainless steel silk material after annealing with wire drawing machine, at the first passage drawing
The a diameter of 7mm of stainless steel silk material after reason, the drawing deformation amount 23% of single pass, cumulative deformation 23%；
Pass through comparative example 1 and comparative example, it is seen that advantages of the present invention is mainly reflected in：
(1) there is high density cold-drawn state tissue, the wherein tissue of large deformation silk material as shown in figure 3, serious become occurs for tissue
Shape is elongated along drawing direction, is distributed at bacillar structure；And rolled and conventional deformation amount drawing tissue such as Fig. 1 and figure
Shown in 2.
(2) deformation induced martensitic traoformation has occurred, as shown in figure 4, aximal deformation value drawing tissue can be obtained by XRD analysis
Deformation induced martensitic traoformation has occurred in inside, and martensite peak position is very high；And hot rolling and conventional drawing do not detect geneva
The presence at body peak or the peak position of martensite are very low.
(3) Fig. 5 is influence of the cumulative deformation to silk material hardness and wear rate, and Fig. 6 is shadow of the deflection to tensile strength
It rings, it can be deduced that this method, which controls obtained cold-drawn state, can promote tensile strength 1-3 times, and micro-vickers hardness improves 2-3
Times, wear rate reduces by 5~30%.
Embodiment 2
A kind of preparation method of 304 abrasion-proof stainless steel silk of the present invention, specifically comprises the following steps：
Step 1, selection：
The 304 stainless steel silk materials for choosing a diameter of 10mm of raw material preset finished product according to the wear-resisting steel wire product specification of enterprise
A diameter of 8.3mm.
Step 2, it anneals：
The 304 stainless steel silk materials of a diameter of 10mm are annealed at a temperature of 1000 DEG C, annealing time 2h；Annealing
The principle of temperature selection is so that silk material is fully softened, while controlling tissue recrystal grain does not occur and growing up.
Step 3, multi pass drawing is handled：
Before carrying out drawing process, one end of the stainless steel bar after annealing is carried out to grind sharp processing, and scale removal, is
First passage drawing is prepared.
First, the first passage drawing process carried out to the stainless steel silk material after annealing with wire drawing machine, at the first passage drawing
The a diameter of 9mm of stainless steel silk material after reason, the drawing deformation amount 19% of single pass, cumulative deformation 19%；
Secondly, the second passage drawing process is carried out to the stainless steel silk material after the first passage drawing process, the second passage is drawn
The a diameter of 8.3mm of stainless steel silk material that pulls out that treated, the drawing deformation amount of single pass is 15%, and drawing cumulative deformation is twice
31%, it reaches and presets finished size, 304 abrasion-proof stainless steel silks are made.
The specific drawing process of the present embodiment is as shown in table 4 below：
Table 4 is annealed preceding drawing process for the first time
Embodiment 3
A kind of preparation method of 304 abrasion-proof stainless steel silk of the present invention, specifically comprises the following steps：
Step 1, selection：
The 304 stainless steel silk materials for choosing a diameter of 2.8mm of raw material are preset to according to the wear-resisting steel wire product specification of enterprise
The a diameter of 2.3mm of product.
Step 2, it anneals：
The 304 stainless steel silk materials of a diameter of 10mm are annealed at a temperature of 1000 DEG C, annealing time 30min；
The principle of annealing temperature selection is so that silk material is fully softened, while controlling tissue recrystal grain does not occur and growing up.
Step 3, multi pass drawing is handled：
Before carrying out drawing process, one end of the stainless steel bar after annealing is carried out to grind sharp processing, and scale removal, is
First passage drawing is prepared.
First, the first passage drawing process carried out to the stainless steel silk material after annealing with wire drawing machine, at the first passage drawing
The a diameter of 2.5mm of stainless steel silk material after reason, the drawing deformation amount 20% of single pass, cumulative deformation 20%；
Secondly, the second passage drawing process is carried out to the stainless steel silk material after the first passage drawing process, the second passage is drawn
The a diameter of 2.3mm of stainless steel silk material that pulls out that treated, the drawing deformation amount of single pass is 15%, and drawing cumulative deformation is twice
33%, it reaches and presets finished size, 304 abrasion-proof stainless steel silks are made.
The specific drawing process of the present embodiment is as shown in table 5 below：
Table 5 is annealed preceding drawing process for the first time
Claims (6)
1. a kind of preparation method of 304 abrasion-proof stainless steel silk, it is characterised in that：The preparation method includes following steps：
Step 1, selection：
Choose 1.3 times of default finished diameters of diameter ﹥ of 304 stainless steel silk material of raw material；
Step 2, it anneals：
By 304 stainless steel silk materials, being made annealing treatment, annealing temperature is 650~1000 DEG C, and annealing time is 30~150min,
The stainless steel silk material after annealing is made；
Step 3, multi pass drawing is handled：
Multi pass drawing processing is carried out to the stainless steel silk material after annealing, the drawing deformation amount of single pass is 15~45%, when tired
When meter deflection reaches 30~65%, if the stainless steel silk material after drawing reaches finished size, 304 abrasion-proof stainless steels are made
Silk；If not up to finished size is made annealing treatment again, annealing temperature be 500~850 DEG C, annealing time be 20~
30min, then it is air-cooled to room temperature, obtain the stainless steel silk material after Drawing-anneal；
Step 4, condition judgment：
When 1.3 times of default finished diameters of diameter ＞ of the stainless steel silk material after Drawing-anneal, then step 3 is come back for, until
When the default finished diameter in diameter≤1.3 times of the stainless steel silk material after Drawing-anneal, step 5 is carried out；
Step 5, the drawing process before finished product：
Single pass or multi pass drawing are carried out, it is 15~45% to control every time drawing deformation amount, is drawn to finished size, is made
Obtain 304 abrasion-proof stainless steel silk finished products.
2. according to the preparation method of 304 abrasion-proof stainless steel silks described in claim 1, which is characterized in that the step 1
In, 2.8~10mm, finished product ranging from 8.3~2.3mm of size may be selected in 304 stainless steel silk material diameter range of raw material.
3. according to the preparation method of 304 abrasion-proof stainless steel silks described in claim 1, which is characterized in that the step 2
In, annealing uses shaft furnace.
4. according to the preparation method of 304 abrasion-proof stainless steel silks described in claim 1, which is characterized in that the step 3
In, annealing moves back stove using hydrogen.
5. according to the preparation method of 304 abrasion-proof stainless steel silks described in claim 1, which is characterized in that the step 3
In, before carrying out drawing process, one end of the stainless steel bar after annealing is carried out to grind sharp processing, and scale removal, is drawing
It prepares.
6. according to the preparation method of 304 abrasion-proof stainless steel silks described in claim 5, the scale removal uses ball blast
Machine.
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| CN113695847A (en) * | 2021-08-12 | 2021-11-26 | 江苏钜顺链业科技有限公司 | Production method of stainless steel hoisting gourd chain |
| CN115365316A (en) * | 2022-08-03 | 2022-11-22 | 江阴苏威精密线材有限公司 | Flexible high-strength stainless steel wire and preparation method thereof |
| CN116024503A (en) * | 2022-12-09 | 2023-04-28 | 东北大学 | Nickel-saving type duplex stainless steel wire with high strength and preparation method thereof |
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