TW473551B - Steel sheet for heat shrink band and fabrication method thereof - Google Patents

Abstract

A heat shrink band steel sheet of the present invention comprises on the basis of percent in weight C: 0.1% or less, Si: 0.1% or less, Mn: 0.1 to 2%, P: 0.15% or less, S: 0.02% or less, sol Al: 0.08% or less, and N: 0.005% or less, or C: 0.005% or less, Si: 0.1% or less, Mn: 0.1 to 2%, P: 0.15% or less, S: 0.02% or less, sol Al: 0.08% or less, N: 0.005% or less, Ti: 0.02 to 0.06%, and B: 0.0003 to 0.005%, wherein the product of a magnetic permeability in the magnetic field of 0.3 Oe after heat shrinking treatment and a thickness (mm) is at least 350. A color CRT having a sufficient magnetic shielding characteristic and a less amount of color deviation can be realized by the steel sheet.

Description

4V3551 V. Description of the invention (1) The present invention is about one meaning, ‘the present invention is locked tightly around the panel. The background is! _ The color cathode radiation system must be processed at 1 X 1 0-7. Therefore, a tube formed from a bell-shaped bell to a few tens of seconds is embedded in the glass, and the tension caused by the deformation of the glass panel is contracted. In addition, like the aforementioned protector, it also has a heat-shrinkable steel strip. The phenomenon of the color deviation of the bullet on the fluorescent surface should be regarded as the degree of geomagnetism of the heat-shrinking (larger is the magnetic protection and the color partial heat-shrinkage caused by the phenomenon) Regarding a kind of heat-tight wire tube, torr of the left and right planes of the plate, in the 400-steel plate heating and expanded panels, and the heat is so-called to prevent the occurrence of position. To about 0.3 Oe, the steel sheet for steel strips and its manufacturing method are not sufficiently separated; that is, the steel sheet for steel strips and its manufacturing method are used in color cathode ray tubes of televisions and the like. 6 0 0. The heat expansion treatment of the left composition makes the color, and the so-called cathode ray tube is also attached. Therefore, the steel belt is tightened in the right temperature region of the tube body to facilitate the color The cathode-ray tube with a dark color, which is used to modify the surface heating jacket (shrink-f body, must be explosion-proof to tighten the steel strip for the seconds of polar ray cooling and plate plane). It has the same function as the internal magnetic protection and protection of geomagnetism; as mentioned above, the phenomenon of electron beam deviation due to geomagnetism is prevented, that is, to prevent the so-called use of soft steel, but because of the permeability of soft steel), it is 200 or so, so in order to prevent the so-called due to geomagnetism, as a result, it is necessary to carry out this

V. Description of the invention (2) The complicated operation of adjusting the position of the camping surface. The method for increasing the permeability under the degree of geomagnetism is based on the following method: Japanese Patent Application Laid-Open No. 10-208670 'proposes the following, which contains C (carbon) $ 0 0 0 5 wt%, 20 weight = 4.0% by weight, 0.1% by weight < Mn (it) < 1 η. — (Photo) U 9 goes inside θ. = Mn Cmeng) = 1. 0% by weight, ρ (Solubility, S (sulfur): · 2. 2.% by weight, So1 · A1) a 〇Weight ': Quantitative person 0 ″% by weight $ S〇1. A1 (Solution Ming .. ~; weight I / °, and N (nitrogen) S. 005% by weight of steel, into the internal management 'Next, in the temperature range of °. ° ~ 900 ot 7 with a slight 4 ί: ί The magnetic degree is carried out at a cold rolling reduction rate of 3 to 15% ;: After the above, in the aforementioned method for improving the landing, it also shows that: · The magnetic permeability by heating and cooling Λ makes it easy to obtain a heat-shrinkable steel strip at a geomagnetic degree of 0.3 ° e. L, 'and has quite sufficient magnetic protection, but' the inventor of the present case, as described in Hei 10-20-7 The steel sheet used in this patent is not applicable to the heat-shrinkable steel strips of Caishen; the py 7-color cathode ray tube may not be magnetically protective when it is used. The present invention aims to solve problems like the aforementioned The purpose is to provide a kind that can be formed together. Although the magnetic read-protection H H Ai phase of the present invention actually achieves this, it has 473551 V. Description of the invention (3) Shrinking steel Steel plates can be used. The field system can contain c (carbon) of 0% by weight or less, Si (silicon) of 0% by weight or less, 0.1 to 2% by weight of heart (manganese), and 0.15 weight. P (phosphorus) below, s (sulfur) below 0.02% by weight, sol. A1 (aluminum dissolved) below 0.008% by weight, and N lice below 0.005% by weight) (hereinafter, The steel material of this composition system is referred to as steel material.) And ^ The heat-shrinkable magnetic field 〇3〇 the product of the magnetic permeability f and the thickness (mm) of the steel plate for heat-shrinkable steel strips of 350 or more, In order to achieve the aforementioned purpose. In addition, when containing c (carbon) of 0.005% by weight or less, Sl (Shi Xi) of 〇1 or less, ^ (toughness) of 0.1% by weight, and P (phosphorus) of 0.15 or less ), 0.02% by weight or less (sulfur), 0.08 by weight of sol. Al (soluble aluminum), 005% by weight or less of N 〇 = ^, 0.02 ~ 0.06% by weight ^ (Titanium), and 〇〇〇03 03 ~ steel amount (Shi Peng) (hereinafter, the composition of the steel is referred to as 0.3 〇) and the date of the magnetic field after shrink-fit treatment ? The product of the permeability of e and the thickness (_) of the steel plate is more than 3 50. The permeability of the steel plate after the shrink-fit treatment is more than 35%, and the permeability and the thickness ( _) The product of Si is the steel plate for heat-shrinkable steel strips. Method r system :: The method of manufacturing steel plates for heat-shrinkable steel strips as described above is performed by processing the steel plate with the composition system of steel 1 above, and the steel plate with the composition system of steel 1 is performed. Hot rolling and then cold rolling to produce steel plates,

V. Description of the invention (4) And, in the temperature region of 650 ~ 900 ° C, the annealing process is performed on the aforementioned cold-rolled steel sheet, and in the temperature region of 250 ~ 500 ° C, With respect to the aforementioned annealed steel sheet, a method for manufacturing a steel sheet for hot-shrinkable steel strip that has undergone a Japanese π political treatment process is performed so as to manufacture such steel sheet for heat-tightened steel strip as described above. / On the other hand, in a state where the steel plate with the component system of the steel material 2 is provided, it is preferably 800 to 900. (The temperature range of 3 is annealed. In addition, under the conditions described above, the system does not necessarily need to undergo an aging treatment after annealing. However, when the temperature is between 25 and 5 (When the temperature range of the pc is subjected to aging treatment, it can be further reduced.) The time-dependent change of the magnetic permeability after heat shrink (shrink-fi 1 :) treatment is 0 regardless of any of the foregoing. The composition of the steel plate, the purpose is the same as the conventional prior art steel plate, in order to improve the flatness of the steel plate or prevent the occurrence of tensile strain (stretcher_strain) phenomenon in the processing day, that is, although it can After the aging treatment, or without the aging treatment, and only the annealing treatment, & rolling treatment for quenching and tempering 'but' in the state as described above, in order to prevent Deterioration of magnetic characteristics occurs, therefore, the steel plate must be less than 0.5%. Brief description of the figure Figure 1 is used to show the relationship between the Si (silicon) content and the geomagnetic deviation Schema.

T / JJJ 丄 V. Schematic description of invention (5). Fig. 3 is a graph showing the relationship between the annealing temperature and magnetic permeability # and in the steel sheet 1 between the plate thickness t and Fig. 4. & η + μ ′, a graph showing the relationship between the annealing temperature in the steel 2 and the permeability # and: product. ',,, A graph showing the relationship between the product of the over-aging treatment temperature in steel 1 and the product of penetration, = ^, and plate thickness t with x t. The second and second series are used to show the over-aging treatment temperature and magnetic permeability in steel 2. The graph of the relationship between the product of the plate thickness “and χ t. Figure 7 shows the relationship between the product of the reduction rate for tempering, the product of the permeability # and the plate thickness t, μ X t The best mode for carrying out the invention The inventors of the present invention have conducted a related review on the characteristics of the steel sheet that causes color deviation when the steel sheet for heat-shrinkable steel strip is applied to a color cathode ray tube. As a result, it was found that: the content of Si (silicon) and the magnetic field of the degree of geomagnetism, 0.30 e, the permeability # between the plate thickness t and the product # Xt, are very important factors. 1. S i (silicon The relationship between the content and the amount of geomagnetic deviation is melted in the laboratory. It has 0.02% by weight (: (carbon), 0.15% by weight ribs (slit), 0.01% by weight 2P (disc). Q. 〇] 3% by weight (sulfur), 0.30% by weight 301. A1 (solubility aluminum), and 0.002% by weight! ^ (Nitrogen) in addition to the Si (Ishiba) component The steel material 1 has a composition of < § in a range of 0.001 to 0.2% by weight and a steel material having a si (silicon) content changed, and then, by Hot and cold rolled while

88110170.ptd Page 10 473551 V. Description of the invention (6) A steel plate with a plate thickness of 3.2 mm is manufactured, and annealed at 750 ° C for a few seconds, and then, ^ After the work has been carried out, the aging process is carried out for 90 seconds, and then the steel sheet is processed into a prescribed shape without being subjected to a calendering process: to produce a steel sheet, and, After performing a heat treatment equivalent to a heat jacket (shrink — =: 50: vC, 60 seconds), the steel strip is embedded in a (television) cathode ray tube panel of 29: inches, so that And difference test 'to obtain the geomagnetic deviations Bh and Bv. ~ The geomagnetic deviations and the differences Bh and Bv are based on the crt (cathode ray tube) plus a vertical magnetic field of 0.35 〇e and 〇3 〇e Next, rotate 36 0. The CRT r is as dangerous as outside the ground, and the state of Dingzye ^ ^ (land, g ^ ^ (iandin " r -... the two positions deviate from the position. ,,. The peak-to-peak difference Bh 'from the landing-error' is also based on the horizontal magnetic field. 〇e, 'and the geomagnetic bias 0 〇e is changed to 0.3. The position deviation at 5 oe causes the vertical magnetic field to pass, and the geomagnetic deviation Bv: atdlng-error) is measured. The deviations Bh, Bv 'are the same as the magnetic seal. The amount of geomagnetic deviation is relatively small, so βν is relatively small. Therefore, the degree of geomagnetic deviation is relatively small. The larger the color deviation is, the more Si 1 (silicon) containing catfish & is shown in the figure. In 1, the geomagnetic field is represented by the relationship between the Si_stone deviation Bh and Bv as the relative value at 1: ^: The value in the state of denier, and from Figure 1, we can know that: tSi (person ^ h, Bv ) When 3% is below 0.1%, V. Description of the invention (7) The geomagnetic deviation Bh ^ Good geomagnetic deviation v-3 becomes less than 1.0, and when displayed, the geomagnetic deviation f. On the one hand, when The upper phase of the Si (silicon) content, when good, shows the so-called: Γ, βν increase some of the foregoing knots starting from L0; m properties tend to deteriorate. The dryness is caused by the general standing of magnetic susceptibility and the so-called increase in Si (Silicon) Contradictions that can be improved by the second thought can be contradictory to the so-called phenomenon with Si (Si), It is also related to the increase of I with ^ σ); ^ & 砘 疋 蚪 纴. At a glance, the inventor of this case 'when performing fa ^, the panel and steel ^) content exceeding 0 pole 7 The tightness between the steel strips is reduced, and between the strips of Λ1, there is also a right embarrassing w, which is in the gap between the panel and the steel. The properties are degraded, and the reason why the indium 憨 douxi 乂 increases the S1 (silicon) content and decreases the δ properties of the panel and the steel 3 is not clear, but it is believed that it is due to si (silicon) The so-called high-temperature strength can be improved. Therefore, when shrink-fit treatment shrinks, the adhesion between the panel and the steel strip is reduced, so that there is a gap between the panel and the steel strip. In the method disclosed in Japanese Patent Application Laid-Open No. 10-208670, since si (silicon) is contained in more than 2%, the so-called reduced stress can be increased to more than 40 kgf / mm2, and, 1% 之间 When the strength design of the panel plane deformation prevention and the internal explosion prevention of the pipe body is subject to considerable restrictions, however, in the present invention, since the Si (Ishiba) content can be reduced to 0.1% or less Therefore, the so-called drop stress can also be less than 40 kg f / mm2. As a result, the aforementioned deformation prevention of the panel plane and the pipe body can be achieved.

88110170.ptd Page 12 V. Explanation of the invention (8) Internal explosion prevention ~ --- "The degree of phase change will also have the so-called choice of materials except for the foregoing; ^ exists. In the steel plate for steel strip, a 1 ( Xi) beyond the control of the content 'is in the amount, the limitation: two must be si "Xi" other than 4; tightening points * yes, just;) Yu Eryi! In order to strengthen the steel plate, Motoko Mθ is half-hearted, and Lu'c (carbon) is the female escort, but the content of (carbon) is less than 01%. Therefore, c H i Mn (manganese) is a hot rolled steel sheet with a hot rolling property and it also contributes to the strong effect of the steel sheet by solid solution strengthening. 1% 又。 Therefore, the lower limit of the content of ’Mn (Meng) is 0.1% again. When the content of Mη (manganese) exceeds 2%, the deterioration of magnetic permeability will occur on the other side. Therefore, the content of Mri (manganese) is so low. In addition, if the aforementioned Mη (manganese) content is 2%, it can be matched with the required strength level, and appropriate == (manganese) content within the range. 2. Selecting η ρ (phosphorus): P (phosphorus) is an element that contributes to the strengthening of the steel sheet. However, in the state that the content of P (filling) exceeds 0.15% by adding 'ρ and 3), embrittlement of the steel sheet occurs due to (-) scales, and there is a so-called cold rolling process. Problems such as rupture of the ring occur. Therefore, the content of P (phosphorus) is less than 0.15% of the steel wire. Here, S (sulfur): S (sulfur) is not suitable for hot rolling and permeability. Both,

8811〇lW.Ptd Page 13 丄 —Explanation of the invention (therefore, S [I *, sol. A1 = the combination of ice, 系 is less than 0.02%. Deterioration, so Lu) 'A1 (aluminum) t leads to the so-called processing wg effect, which prevents the adverse effects such as the above / M (nitrogen) / aluminum) content, which is strengthened by 0.08% or less, and 0 (nitrogen) is the same as C (carbon) and can you be too ideal II? Λ In terms of magnetic permeability, N (nitrogen is, the most amount of 3 (lice) is less than 0. 05% is preferably less than 0.003%. Bu 'but there is = the composition of the steel 1 In the system, when the content of C (carbon) is 0.05% or less and added by 0.002 to 0.06 denier / (titanium) and 0.0003 to 0 005 mile 0, the composition system is the main J The BC boron J steel 2 of the inside (nitrogen hp can make the solid solution c (broken) and solid solution N) in the steel become slaves and nitrides, etc., and fix the solid solution in the steel. Since N (nitrogen) is dissolved, the time-dependent change of the magnetic permeability after the so-called shrink-fit treatment can be further reduced. In addition, the content of c (carbon) is preferably 0.002% or less, the content of Ti (titanium) is preferably 0.03 to 0.05%, and the content of b (boron) is preferably It is preferable that they are 0,0003 to 0.001% by weight, respectively. Here, in order to avoid the phenomenon that the so-called magnetic permeability and ductility decrease due to excessive addition of Ti (titanium) and B (boron), the upper limits of Ti (titanium) and b (boron) are set. In addition, the result of FIG. 1 is a result of the composition system of the steel material 1, but 'even in the composition system of the steel material 2 which contains Ti (titanium) and b (boron) as essential components' Get the same result.

88110170.ptd Page 14 473551 V. Explanation of the invention (ίο) 3. The relationship between / z X t and the geomagnetic deviations B h and B v is melted in the laboratory. (But) 0.02% by weight of "(Shi Xi), 0.8% by weight of 1 ° (manganese), .0?% By weight of plutonium (phosphorus), 0.006% by weight 2S (sulfur), 〇〇4% by weight of so ;: M (Solution), UG2% by weight U (Nitrogen), U4% by weight, ::: 〇2_% by weight (Steel) of the steel system of the steel 2 component, and then, With hot-rolled and cold-rolled steel sheets with a degree of 0.8 ~ 1.6_, and at a plate thickness of 8Cjn. ^, The state of the basket C or 870 ° C: after the second annealing treatment, and then, 45 "The shape of" c "is removed by tempering and calendering, and the processing is performed without a belt and the phase is performed. The second shape becomes the steel of the specified shape for 60 seconds of 0C. S rink ~ f it) treatment of 500 to the surface heat treatment, the ^ ουυ (television) cathode is radiated around the tower f shi 咿, embedded in the 29-inch τν property test, and 妯 ^ reverse, in order to facilitate With the aforementioned land Deviation (Shrink-fi j difference Bh / V. In addition, the geomagnetic path 2: ^ ° is measured by a thermal jacket and inspection sheet (inner diameter 33m two steel plates' sampling ring). Heat treatment for 60 seconds in order to As a habit; 30e 的 磁 磁 ##. At this time, pass to the right), "1% by weight of the material of the ° ° ° 4% by weight of C (015% by weight of carbon 卩 1 silicon), 0.21 weight % Of (manganese), 0 after aging treatment, then [into

88110170.ptd Page 15% is called "(Solution))? Η. 13% by weight of" Sulfur ", 0, weight 0 steel plate, annealed and: the above " gas)

V. Explanation of the invention (11) The same review is performed for the materials of the conventional prior art, and the tempering of the rolling reduction is calendered to form a sample, and also for this sample, 0 t = 2 t H 7F 出 # X t The relation between the amount of geomagnetic deviation Bh and Bv. In Fig. 2 the main 'shows the value of the material of the prior art as a coincidence value of 1' and shows the geomagnetic deviation in Fig. 2 She, Βν. It can be known at all times: ... until it becomes 30. The deviations Bh and BV are all around 10: first = the value of the material ', but when "t becomes 300 or more Bh, Bv. The geomagnetic deviation of the material of the technology is also the result of Fig. 2 This is the result of the composition system of steel material 2. However, the steel of (butterfly) is that even in the composition system that does not necessarily include the two materials 1, the steel plate for 1 (titanium) can be obtained. Under cold rolling conditions: 'C (carbon), (manganese), 0. 0. 03% by weight of the composition of the steel 1, and 劁 ice in order to produce the results of the foregoing invention; Ί thin steel sheet And-generally used treatment, followed by annealing and over-aging treatment under the air suffix. Y, 4. The relationship between the annealing temperature and the laboratory, C described below is 0.03% by weight (or f has There is 0.02% by weight of the amount of (disc), two. The amount of two cores sol. A1 (solubility of aluminum) / ° of S (sulfur), the system of steel, save 1% by weight of ^ ( Nitrogen) Accepted by hot-drying and cold-rolling

Dou / 3551 'Invention description (12) Steel core with a thickness of 1.0mm, r Λ η ° η η rod, and in the state of 500 C ~ 9 0 t, the person who anneals in 60 seconds ^^ After 90 seconds of aging, the user was treated with the cranial f effect in the state of 400C, and the condition was not quenched. 55ίT, and a ring-shaped test piece was taken, and ， Where the heat treatment is performed at 500W seconds of = when = (shrink_flt) processing: 'in order to find the magnetic permeability of the magnetic field of the degree of magnetic field 0.3 · e>. The handle 2 in the second 2 shows the relationship between the annealing temperature in the steel 1 and the product of the magnetic permeability "and the product # xt. In the steel dagger composition system, the multiplication between the magnetic permeability # and the thickness t of the plate # X t becomes 350 or more. Therefore, the system must be annealed in a temperature range of 65 ° C to _ ° C. Similarly, in the laboratory, the material containing 0.02% by weight of ^ (carbon), 0.1% by weight of "(silicon), 0.30% by weight of felt (manganese), and 0.08% by weight was melted. (Tank), 0.005% by weight of 3 (sulfur), 0.03% by weight of 301. Al (Aluminum), 002% by weight (nitrogen), 0.03% by weight of Ti (Titanium), and 0.003 wt% 2B (Shi Peng) of the _2 component steel, and then 'heated' and cold rolled to produce a steel plate with a thickness of 1.0mm, and in? 5 (rc ~ ° C, after 90 seconds of annealing treatment, the lack of 45 (TC in the state of '2 minutes of aging treatment' :: == quenching and tempering = treatment of In the state, the heat treatment equivalent to the shnnk-fit process is performed in order to find the magnetic permeability of the magnetic field 0.3 Oe //, and also the degree of degree is shown in FIG. 4, which shows the steel Annealing Temperature and Permeability in “" and 473551 V. Description of Invention (13)

The product of plate thickness t #X t is the relationship. It can be seen that when the annealing process is performed in the temperature region in the component system of the steel material 2, the product // Xt becomes 4,000 or more. When the magnetic permeability at 800 ° C ~ 900 ° C // and the thickness t between Figure 3 and Figure 4 correspond to the steel plate state, the crystal grains after the process are relatively small; 2 treatment, it can also be annealed The grains become finer. 5. The relationship between over-aging. The microstructure of the annealing temperature is the growth phenomenon of annealing treatment. If the magnetic permeability is increased with recrystallization at 6 5 0, the temperature will be changed again. Regarding the changes caused by # X t, it is considered that: 1. When the temperature is less than 650 ° C, the permeability # will become ° C due to the recrystallization phenomenon and insufficient recrystallization. Annealing at 900 ° C and growth of crystal grains after recrystallization3. When the temperature exceeds 900, due to abnormalities, therefore, the magnetic permeability # reduce. The product v Xt between the magnetic permeability β and the thickness t of the plate is shown in the laboratory's laboratory. It has a value of 0.03% by weight (carbon), 0.03% by weight (silicon), 0.2 〇wt%. (Manganese) amount% 2P (phosphorus), 0.0005wt% 8 (sulfur), 0.004wt% sol. A1 (solubility aluminum) and 0.02wt% ( Nitrogen) steel, the steel of the composition system, and then hot rolling and cold rolling to produce a steel plate with a thickness of 1.2mm, and then annealed in a 75 (rC2 state) Then, in a state of 150 to 55, the aging treatment is performed for 90 seconds, and then a ring-shaped test piece is taken under the condition that the calendering treatment is not performed, and Carrying out this phase

88110170.ptd Page 18 473551 V. Description of the invention (14) When heat-treated at 500 ° C for 60 seconds, in order to obtain the geomagnetic field magnetic field 0.30 e 中 之Permeability //. In Fig. 3, the relationship between the aging treatment temperature in the steel material 1 and the product of the magnetic permeability µ and the thickness t of the plate // t is shown. In the composition system of steel material 1, after 100 hours at 150 ° C, it is ensured that the product of the permeance permeability μ and the thickness t of the plate / z X t becomes 3 50 or more. It must be aged in a temperature range from 250 ° C to 500 ° C. Similarly, in the laboratory, the melt is provided with 0 (carbon) 0. 0 2 2% by weight, iSi (silicon) 0. 0% by weight, 2Mn (manganese) 0. 0% by weight卩 (phosphorus), 0 · 0 6 6 wt% 8 (sulfur), 0.04 wt% isol. A1 (soluble aluminum), 0.0 0 2 wt% ^ (nitrogen), 0.0 3 wt% butyl i (Titanium), and 0. 0 0 0 8 wt% 2B (Boron) steel 2 as the component steel, and then, by hot rolling and cold rolling treatment, to produce a steel plate having a thickness of 1.2 mm, and After annealing at 90 ° C for 90 seconds, then aging treatment at 170 ° C ~ 50 ° C for 2 minutes, Next, after the heat treatment equivalent to the shrink-fit process is performed in a state where the quenching and tempering treatment is not being performed, then, at a temperature of 150 ° C, a temperature of 1 0 0 is performed. Hours of heat treatment, in order to determine the magnetic permeability of the magnetic field 0.3 Oe magnetic field #. FIG. 6 shows the relationship between the over-aging treatment temperature in the steel material 2 and the product X t of the magnetic permeability // and the thickness t. It can be known that, in the composition system of steel material 2, when the temperature is 150 ° C,

88110170.ptd Page 19 / 丄 V. Description of the invention (15) The 100% of the South β magnetic "and the thickness t of the plate ;; After that, the material efficiency treatment temperature is transparent to this, in the steel 2 The effect of ^ product # Xt is very small, because it may need to be overaged at 25 ° t ~ ^, but at the time, it shows the temperature range of C and is overaged. The 100-hour persistence is higher than the aforementioned temperature of 150 ° C. It is ideal to go to the ground. ", The value of the product # X t ', therefore, it is equivalent to that in Figures 5 and 6 ^ The change in the temperature is considered to be due to the joint relationship between the processing temperature and the work caused by #xt. The melting and precipitation of the stone dislikes in the sapwood are partially melted, such as during the annealing process. The temperature of the carbide treatment is too low Γΐ in the presence of a solid solution c, but when it is over-aged, it can not be filled sufficiently, then the sleeve (shruk-fitt = out of the foregoing) The solid solution c, so that even in the heat compound, A, even if the "treatment" will precipitate a very fine interference rate " High, then as Π shrink-fit) processing, permeability ^ ^ Cloth kernel, then it was reduced. On the other hand, when the obsolete temperature is too high, j? 'At the hot-fit (Shrink-fit) will increase the content of the solid solution c, so that the hot-fit (shrink ~ fit) it w ^ ^ ^ τ; After the heat treatment, relatively fine carbides will be precipitated, and therefore, the permeability / ζ will decrease. 6. The relationship between the 5-week quality reduction rate, the product of the magnetic permeability β, and the thickness t is based on the relationship between X and Q. In the experiment, the weight of the product is 0.0003 weight (carbon) and 0.01 weight. ° / D of Si (silicon), i 〇wt%-(manganese), 〇8 重

Page 20 H // V. Explanation of the invention (16) ％ (photo) in the amount of%, 〇nc. W.M (dissolved in, ·: ％% (碰) / .04 重 的 之 Ti ( Titanium), and ._ 〇 』wt% U (Gas): 0.05 steel" steel, then, buried; steel; 2% "shed steel" 2 "separation degree 1 · 0_ steel plate, and Finished by hot rolling and ♦ rolling treatment, and manufacturing Q out of plate thickness, and in the state of 8 5 0 t: after 90 seconds of annealing treatment, you are missing ^ _ ± ^…, after '5 4 0 〇C under the condition of cancer 'progressor for 2 minutes: τ years old, treatment, and then' tempering calendering for tempering with 0 ~ 2% reduction rate ^ Ϊ Z easy to take a ring-shaped test piece, and, This is equivalent to 500 of S, Γ 丨 nk 丨 丨 t) processing. The magnetic permeability in the magnetic field of 0.30e // is measured after a heat treatment of 60 seconds below 0 °. FIG. 7 shows the relationship between the rolling reduction for tempering and the product # X t between the permeability # and the thickness t of the plate. It can be known that if the reduction ratio of the calendering for tempering is 0.5% or less, the product between the magnetic permeability ^ of 350 or more and the thickness t can be obtained as Xt. On the other hand, when the reduction ratio of the calendering for tempering exceeds 0.5%, the product of the magnetic permeability // and the thickness t between the plate thickness t χ t decreases to less than 350 °. From the results in FIG. 7, It can be inferred that in a state where the reduction ratio is 0.5% or less and the condition is relatively small, 'the rolling and tempering process is used for tempering so as to introduce the distortion and deformation phenomenon introduced into the steel sheet' into the steel sheet more uniformly. On the pole surface, however, since the distortion of the steel plate can only be introduced into the steel plate extremely roughly, it does not cause a significant reduction in permeability. In general, in the state of the thin steel sheet for processing, after the annealing treatment,

473551 V. Description of the invention (17) '-It is calendering for quenching and tempering, in order to reach, lift and stretch strain during processing (stretcher_stJn) :. Effect of prevention. However, in the state of heat-shrinking steel strips, the forming and processing operations used to become steel strips are not strictly required in the first place. Therefore, from the viewpoint of preventing the deterioration of magnetic characteristics from occurring, it is most important. It is possible to reduce the rolling reduction of the quenching and tempering as much as possible. In the state where no problem occurs, the quenching and tempering 卽 1 匕 :: 二 Ϊ7 results can be omitted, which is the composition of the steel 2 As a result, however, the same results can also be obtained with the scoring towels, A Ding, and steel 1 with Tl (titanium) and 6 (boron). From the point of view of corrosion resistance, a dip plating treatment is added, but the county M θ + > + cooked compacted steel strip also meets the requirements of this invention before application; If you look around, you can get the stipulated Example 1 in the refining and manufacturing of the table 丄 丄, 4 to 1 200. (: And, after forming the steel materials A to G of the y-knife system, heating is performed in the state of Ϊ: two temperatures are 82 °. ° and the winding temperature is 680 plates. In the above, it becomes a plate After the thickness of the steel, then, cold rolled to ",, rolled plate, and pickled 550 ~ 85 0. (: in between, enter a dry · ^ 〇 · 8 ~ K6mm, and, is The annealing treatment is carried out at a time of 35 ton, and then, the steel plate is ejected. The aging treatment is performed after 2 minutes, and the manufacturing is performed.

88110170.ptd Page 22 Five descriptions of the invention (18) :: The aforementioned steel plates are also subjected to a heat treatment of 500 t equivalent to a heat jacket (shrink_m): a heat treatment of 5 seconds to room temperature, and then, using 俨And in the process, ~ 〇P method @ 2 will use a ring-shaped test piece to measure the coercive force until UT). This and the excitation (㈤tatl〇n) Xiao Yanxi is Fentian Congshiji In addition, the DC magnetic characteristics after heat treatment at 100 ° Nishou at 150 ° C were also measured. In addition, add the foregoing to the evaluation of the magnetic stabilization zone ', and heat it to 50 (TC) after the steel tube of the specified shape of the TV (television) cathode-ray tube / board. The evaluation of the steel belt's, embedded, and 29-inch difference. In order to facilitate the above-mentioned results of the magnetic bias, the results are shown in Table 2. y Steel A, and this should be used before the conventional and used As shown in Figure 2, the method used for quenching and tempering with a reduction ratio of 1% is manufactured by the method and is used as the relative value at 1. In order to facilitate the rationality of the geomagnetic deviation of the steel plate, as shown in Table 2, System: = the so-called geomagnetic bias. Temperature, over-aging treatment conditions, and plant parts know: the steel plate produced by the composition, annealing method, the magnetic field / reduction rate is within the scope of the present invention, and ， The steel plate is provided with a phase xt ′ system of 35. In addition, it also has a quite stable magnetic characteristics: good geomagnetic deviation, the same as ′ 5 Hai by the present invention, its magnetic field 0.3. The sample produced by the method of e, γ + Wai / Bu, also has a very bad injury 'is less than 35, and The aforementioned color deviation phenomenon! Deviations, therefore, as to prevent the industry. On the table, the system must be very complicated for the

88110170.ptd

Page 473 551

V. Description of the invention (19) Table 1 1 (t amount%) Steel: plate c Si Μη Ρ S sol. AI N. Remark A • 0. 020 0. 01 0. 20 0. 05 0. 007 0. 03 0 0020 The steel sheet B of the present invention 0. 060 0. 05 0. 5 0. 04 0. 01 0. 05 0. 002 0 C 0. 003 0. 02 0. 15 0. 08 0. 002 0. 02 0. 002 D 0. 150 0. 02 0. 3 0. 04 0. 09 0. 04 0. 0022 Steel plates for comparison. E 0, 030 0. 01 2. 5 0. 01 0. 08 0. 04 0. 0014 F 0. 040 0. 12 0. 15 0. 05 0. 08 0. 06 0. 0022 G 0. 003 0. 02 0. 3 0. 09 0. 004 0. 01 0.0068 Table 2 Steel plate! Annealing temperature: (° C) Plate thickness: Degrees (mm); Over-aging temperature CC) Rolling rate Bhot By 150 ° Cxl00hr in the state of heat jacket treatment Remarks (% > μ.χ t Coercive force (0e) AiX t Guarantee Magnetic force A 750 1. 2 350 0. 0 560 1. 35 410 1. 4 &, 0.92 0. 89 The present invention: Method (650 1. 2 350 0. 0 510 1. 39 400 1. 45 0. 94 0. 91 850 1. 2 350 0. 4 490 1. 22 400 1. 48 0. 91 0. 88 500 1. 2 350 0. 0 320 1. 77 250 1. 86 1. 01 1. 00 For comparison Example 750 1. 2 350 1. 0 240 1. 75 220 1. 93 1. 00 1. 00 750 1. 2 150 0. 0 540 1. 29 170 2. 21 —-B 700 1. 2 350 0. 0 560 1. 45 410 1. 51. 0. 92 0. 89 The present invention: Method C 800 1. 0 350 0. 5 540 1. 38 420 1. 42 0. 89 0. 88 D 800 1. 2 350 .0 · 5 280 1. 78 160 1. 81 1. 01 0. 99 Comparative steel plate E 800 1. 2 350 0. 5 220 1. 85 200 1. 98 1. 01 1. 02 F 750 1. 2 350 0. 2 230 1. 84 210 I. 93 1. 02 1. 00 G 750 1. 6 350 0. 0 340 1. 81 220 1. 82 1. 01 1. 02 11 III 11 III 88110170.ptd Page 24 473551

V. Description of the invention (20) Example 2 After melting and producing the steel materials of the composition system shown in Table 3 Η ~ 〇, it is heated to 1,200 ~ 1 2 80 ° C, and the finishing temperature is 900. The degree of winding is 6 8 0. (In the state of 3, a hot rolling process is performed to form a steel plate having a plate thickness of 3.2 mm. After the hot-rolled plate obtained above is subjected to pickling treatment, cold rolling is then performed to a plate thickness of 0.8. Up to i.6mm, and annealed for 90 seconds between 800 and 950 C, and then aged for 2 minutes between 2 0 and 5 50 ° C A steel plate was produced. The aforementioned steel plates were subjected to a heat treatment equivalent to the shrink-fit treatment similar to that of the above-mentioned Example 1, and a ring-shaped test piece was used to measure the DC magnetic characteristics. (The magnetic permeability and the coercive force at the time of excitation to the external magnetic field of 100e in 0.3e). In addition, the same method as in the previous embodiment 1 is also used to facilitate the output. Stability of magnetic rolling. In addition, the aforementioned steel sheet was processed into a steel strip having a predetermined shape, and after heating to 50 ° C, the steel strip was embedded to a TV (TV of 29 inches). ) In the panel of the cathode ray tube, so as to evaluate the deviation of the obstacle. The results described above are shown in Table 2. In addition, 0.3% by weight of carbon ((carbon), 0.3% by weight of "(silicon)", and 0.25% by weight of heart (in Bangladesh) were used. 0.015 wt% of rhenium (phosphorus), 0.007 wt% of 3 (sulfur

) 30.05 wt% tsol. A1 (solubility aluminum) '0.0 0 2 0 wt% tN (nitrogen), 0.04 wt% Ding (Ti), and 0.0 0 0 9 wt% (shed) Graded steel, and the conventional method

473551 V. Description of the invention (21) The geomagnetic deviation of a steel plate manufactured by rolling and tempered with a rolling reduction ratio of 1% is taken as the relative value at 1 in order to show the so-called geomagnetic deviation. As shown in Table 4, it can be known that the steel sheet produced by the method of composition, annealing temperature, and rolling reduction for quenching and tempering within the scope of the present invention has a magnetic field of 0.3 Oe; a The xt is 350 or more, and the steel plate has a fairly good geomagnetic deviation. In addition, in the state where the over-aging treatment temperature is in the range of 250 to 500 ° C, the magnetic characteristics are more stable. On the other hand, the sample produced by a method outside the scope of the present invention has a magnetic field of 0.3 Oe // Xt, which is less than 350, and the aforementioned sample also has relatively poor geomagnetic deviation, so As a countermeasure to prevent the occurrence of the color deviation phenomenon, it is necessary to perform a quite complicated operation.

88110170.ptd Page 26 473551 V. Description of the invention (22) Table 3 ('wt%) Steel plate C Si Μη PS sol. A! N Ti B Remarks 1 Η 0. 002 0. 01 1. 00 0. 075 0. 0. 006 0. 03 0. 0020 0. 04 0. 0003 The present invention I 0. 003 0. 03 0. 74 0. 043 0. 008 0. 04 0. 0024 0. 05 0. 0008 Steel plate J 0. 002 0. 02 0. 96 0. 078 0. 002 0. 04 0. 0018 0. 03 0. 0006 Κ 0. 001 0. 01 1. 89 0. 066 0. Oil 0. 05 0. 0014 0. 02 0. 0014 L 0. 005 0. 01 0 .. 30 0. 085 0. 004 0. 03 0. 0026 0. 05 0. 0005 Μ 0. 003 0. 15 1. 34 0. 059 0. 003 0. 04 0. 0023 0. 03 0. 0011 is better than l., It is better to use Ν 0. 003 0. 01 .2 · 60 0. 036 0. 008 0. 04 0. 0019 0. 05 0. 0006 steel plate 0 0. 002 0. 02 0. 92 0. 082 0. 006 0. 03 0. 0074 0. 02 0. 0004 Table 4 Steel 丨 sheet I j Annealing temperature (° C) Sheet thickness (mm) Over-aging temperature .rc) Tempering i Pressure (%) MU after 150t: After X100h, Bh Bv Remarks M χ Coercivity Co.e) Ai Xt Coercivity (Oe), Η 800 1. 2 410 0.0 490 2/01 390 2: 19 · 0.92 0.91 The present invention tJ 900 1. 2. .470 0. 0 600 1. 92 450 2. 44 0. 88 0. 87 850 1. 2 450 0.0 650 1. 64 500 1. 91 0. 87 0. 85 870 1. 2 480 0. 4 540 1. 82 430 2. 21 0. 90 0. 89 830 1. 2 420 0.0 520 1. 91 430 2. 17 0. 90 0. 90 855 1. 2 210 0. 0 660 1. 60 430 2. 20 0. 87 0. 85 860 1. 2 550 0.0 '670 1. 60 440 2. 16 0. 87 0 84 950 I. 2 480 0.0 340 2. 43 270 2. 98 1.01 1. 0.0 Comparative I 850 1. 2 450 0. 0 670 1. 62 530 1. 88 0. 87 0. 84. Example of the invention J 860 0. 8 450 0.1 430 1. 65 350 1. 91 0. 91 0, 90 Κ 840 1 · 2 450 0_ 0 540 1. 95 440 2. 26 0. 90 0. 89 L 850 1. 0 450 0. 5 420 2. 09 340 2; 31 0.93 0. 92 Μ 850 1. 2 450 0. 0 720 1. 28 560 1. 67 1.01 1. 00 For comparison. Example. Sub 1 Ν 850 1. 2 450 0, 0 340 2. 39 260 3. 10 1.01 1. 00 0 850 1 · 2 450 0. 0 340 2. 52 230 3.41 1.01 1. 00 88110170.ptd page 27

Claims (1)

473551 6. Fanfan for patent application -------------- 1. A steel plate for heat-shrinking steel strip, characterized by: It contains 0.1% by weight of C (carbon), 0 1% by weight of Si (silicon), 0.1 ~ 2% by weight of 11 (manganese), 0.15% by weight of P (phosphorus), 0.02% by weight of S (sulfur), 0.08% by weight of sol. The product of A1 (Solution) and N (Nitrogen) of 0.005% by weight or less, and the magnetic permeability of 0.3 Oe in a magnetic field of 0.3 Oe after shrink-fit treatment, is 3 above 50. 2. A steel sheet for heat-shrinkable steel strips, characterized in that: it contains C (carbon) of 0.05% by weight or less, Si (silicon) of 0.1% by weight or less, 0.1 ~ 2 weight (Manganese), P (phosphorus) below 0.15% by weight, S (sulfur) below 0.02% by weight, sol. A1 (soluble # 吕) below 0.08% by weight, 0 · 005 A composition consisting of N (nitrogen) of less than 5% by weight, 0.02 to 0.60% of butyl i (titanium), and 0. 0 0 0 3 to 0. 0 0 5% by weight 2Β (石 朋), and The product of the magnetic permeability of 0.3 Oe and the thickness (mm) of the magnetic field after the shrink-fit process is 350 or more. 3. —A method for manufacturing a steel sheet for a heat-shrinkable steel strip, which is characterized by having the operations described below: For C (carbon) containing 0.1% by weight or less, and Si of 0.1% by weight or less (Silicon), 0.1 ~ 2% by weight iMn (manganese), 0.15% by weight or less of P (phosphorus), 0.02% by weight or less of S (sulfur), 0.08% by weight or less of sol. A1 (Solution) and N (nitrogen) steel with a content of 0.005% by weight or less are subjected to hot rolling treatment, followed by cold rolling treatment to produce a steel sheet; and, 88110170.ptd Page 28 473551 VI. The scope of patent application is in the temperature range of 650 ~ 900 ° C. For < steel plate, the annealing process is performed; ^ The cold-rolled temperature is 250 ~ 500 ° C. In the area, the annealed steel plates before the lead, y ,,,, etc. are subjected to aging treatment. 4. The manufacture of a steel sheet for heat-shrinkable steel belts is equipped with the following operations: To 'characterized by · For Sl (Shi Xi), c. 1 ~ 2% by weight ^ f), 0.1% by weight or less of P (phosphorus), 0.02% by weight or less of s Meng), 0.15% by weight or less of sol. A1 (soluble aluminum), 0.05% by weight %, 0.08% by weight, hot rolling treatment is performed on steel materials of Ti (titanium) of 0 · 02 to 0.06% by weight, and N (nitrogen) and B (boron) of 0 ° or less. 3〇 ~ 0. 005% by weight rolling process to produce a steel sheet; and then, the steel sheet is annealed at a temperature range of 800 ~ 900 ° C, and then annealed. Homework. 5. The cold-rolled steel as described in 5. The hot-tightening steel method according to item 4 of the scope of patent application, in which the annealing process is being carried out, and the plate is manufactured. . . Over temperature range? The principle of the preparation industry is 250. 6. If the method of manufacturing a steel sheet for heat-shrinkable steel strips in the scope of patent application No. 3 or 5 is produced, after performing the aging treatment, it is also provided with 0. Rolling treatment for quenching and tempering is carried out at a rolling reduction of 5% or less. 7. The method for manufacturing a steel sheet for heat-shrinkable steel strip according to item 4 of the scope of the patent application, wherein after performing the annealing treatment, it is also provided with a tempering at a reduction rate of 0.5% or less. Calendering operations. 88110170.ptd Page 29