KR930009886B1 - Manufacture of heat-resistant glass container - Google Patents
Manufacture of heat-resistant glass container Download PDFInfo
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- KR930009886B1 KR930009886B1 KR1019900010661A KR900010661A KR930009886B1 KR 930009886 B1 KR930009886 B1 KR 930009886B1 KR 1019900010661 A KR1019900010661 A KR 1019900010661A KR 900010661 A KR900010661 A KR 900010661A KR 930009886 B1 KR930009886 B1 KR 930009886B1
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- compressive stress
- glass container
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- 239000011521 glass Substances 0.000 title claims description 62
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 238000001816 cooling Methods 0.000 claims description 19
- 239000005361 soda-lime glass Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 description 16
- 238000010791 quenching Methods 0.000 description 11
- 230000000171 quenching effect Effects 0.000 description 7
- 230000035939 shock Effects 0.000 description 6
- 238000005728 strengthening Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000012634 fragment Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 208000025599 Heat Stress disease Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000003426 chemical strengthening reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
- C03B27/06—Tempering or quenching glass products using gas for glass products other than flat or bent glass plates, e.g. hollow glassware, lenses
- C03B27/065—Stresses, e.g. patterns, values or formulae
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
- C03B27/06—Tempering or quenching glass products using gas for glass products other than flat or bent glass plates, e.g. hollow glassware, lenses
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mathematical Physics (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Surface Treatment Of Glass (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Glass Compositions (AREA)
Abstract
내용 없음.No content.
Description
제 1 도는 본 발명의 1 실시예를 도시하는 유리용기의 1예를 도시한 중앙 종단면도.1 is a central longitudinal sectional view showing one example of a glass container showing one embodiment of the present invention.
제 2 도는 유리두께와 압축응력치의 관계를 나타내는 그래프.2 is a graph showing the relationship between glass thickness and compressive stress value.
제 3 도는 본 발명 방법의 1예를 도시하는 개략 공정도.3 is a schematic process chart showing one example of the method of the present invention.
제 4 도는 열처리 공정에 있어서의 온도 변화를 도시하는 그래프.4 is a graph showing a change in temperature in the heat treatment step.
제 5 도는 본 발명에 의한 유리용기의 내열피로성을 도시하는 그래프.5 is a graph showing the thermal fatigue resistance of the glass container according to the present invention.
제 6 도는 미강화 유리의 내열피로성을 도시하는 그래프.6 is a graph showing the thermal fatigue resistance of unreinforced glass.
본 발명은 내열성 유리용기의 제조방법에 관한 것으로, 특히 일반적인 소다라임유리로 되는 용기로서, 내외 표면에 급냉강화법에 의한 압축응력층을 형성하여 내열성을 향상시킨 내열성 유리용기의 제조방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a heat resistant glass container, and more particularly, to a method for manufacturing a heat resistant glass container in which a compressive stress layer is formed on the inner and outer surfaces by a quench hardening method to improve heat resistance.
종래 컵, 접시등의 유리용기 혹은 쥬스병, 식료용병 등의 유리제 포장용병등의 유리 용기는, 통상 소다라임 유리라 호칭되는 가장일반적인 유리조성의 것으로 부터 구성되어 있다.Conventionally, glass containers such as glass containers such as cups and dishes or glass packaging bottles such as juice bottles and food bottles are constituted from the most common glass compositions commonly referred to as soda lime glass.
그런데 이 소다라임유리 용기의 내열강도(온도차)는 고작 50~60℃이며, 이 유리용기내에 고온의 내용물을 넣은 직후에 물등에 접촉하여 급격하게 냉각되면 온도차가 내열 강도 이상이되고, 열충격에 의해 파손될 우려가 있었다(후기의 제 6 도 참조).However, the heat-resistance strength (temperature difference) of this soda-lime glass container is only 50-60 ℃, and if it is rapidly cooled in contact with water etc. immediately after the high temperature content is put into this glass container, the temperature difference becomes more than the heat-resistance strength and is damaged by thermal shock. There was concern (see Figure 6 later).
따라서 종래 이온교환에 의한 화학적 강화법 호근 냉각에어에 의한 급랭 강화법에 의해, 이 종류의 유리용기의 내외표면에 압축응력층을 형성함으로써 그 내열강도의 향상을 도모하고 있으나, 전자의 경우는 제조코스트가 높아지는 것 및 손상을 가함으로써 열화가 현저하게 되어 반복 사용에 견딜 수 없게 된다고 하는 결점이 있다.Therefore, by using a conventional chemical strengthening method by ion exchange and a rapid quenching method using a cold-air cooling air, a compressive stress layer is formed on the inner and outer surfaces of this type of glass container to improve the heat resistance strength. There is a drawback that deterioration becomes remarkable by increasing and damaging and cannot tolerate repeated use.
후자의 경우는 파손시에 유리파편이 비산(飛散)될 가능성이 있어 안전상의 문제가 있었다.In the latter case, there is a possibility of glass fragments scattering at the time of breakage, causing a safety problem.
또한, 유리조성중에 산화붕소(B2O3)를 가하여 열팽창 계수를 작게 하고 내열강도를 크게한 소위 내열유리도 공지의 것이나. 이 내열유리는 특수한 조성의 유리이며 용융성이 떨어지기 때문에 대량생산은 부적당하며 성형코스트가 대단히 높아진다고 하는 문제가 있었다.In addition, a so-called heat-resistant glass in which boron oxide (B 2 O 3 ) is added in the glass composition to reduce the coefficient of thermal expansion and to increase the heat resistance is also known. This heat-resistant glass is a glass of a special composition and has a problem that the mass production is inadequate and the molding cost is very high because of poor meltability.
본 발명은 상기와 같은 종래의 문제점을 감안하여 충분한 내열성을 가지는 동시에 파손시에 있어서의 비산현상도 없고, 또 생산효율도 양호하며, 양산성이 높고, 제조코스도 저렴한 소다라임유리로 되는 내열유리 용기의 제조방법을 제공하는 것을 목적으로 하여 제안된 것이다.In view of the above-mentioned problems, the present invention has sufficient heat resistance, no scattering at the time of breakage, good production efficiency, high mass productivity, and low cost of manufacturing soda-lime glass. It is proposed for the purpose of providing a method for producing a container.
즉, 본 발명은 SiO2: 60~80(중량%), Ca0 : 5~20(중량%), Na20 : 5~20(중량%)을 주성분으로 하는 소다라임유리에 의해 깊이 15cm 이하로, 바닥면에 대한 개방부 개방 각도가 5도 이상, 바닥부의 곡면부의 반경이 25mm 이상으로 또한 그 중심각이 45도 이상인 유리용기를 형성하며, 온도 조정후, 이 유리용기에 대하여 그 표면에 있어서의 열전달 계수(h)가 대략 0.001(cal/sec·m2·℃)정도가 되도록 서서히 냉각 풍을 쏘여서 냉각 강화를 해서, 유리용기 표면의 압축응력치가 250~650kg/cm2의 범위내의 압축응력층을 형성하는 것을 특징으로 하는 내열성 유리용기의 제조방법에 관한 것이다.That is, the present invention has a depth of 15 cm or less by using soda-lime glass having SiO 2 : 60 to 80 (wt%), Ca 0: 5 to 20 (wt%) and Na 2 0: 5 to 20 (wt%) as a main component. A glass vessel having an opening angle of 5 degrees or more for the bottom surface, a radius of the curved portion of the bottom portion of 25 mm or more and a center angle of 45 degrees or more is formed, and after temperature adjustment, heat transfer on the surface of the glass vessel is performed. Cooling is strengthened by gradually cooling cooling air so that the coefficient h becomes approximately 0.001 (cal / sec · m 2 · ° C.), and the compressive stress layer having a compressive stress value within the range of 250 to 650 kg / cm 2 is formed. It is related with the manufacturing method of the heat resistant glass container characterized by forming.
본 발명의 유리용기는, SiO2: 60~80(중량%), Ca0 : 5~20(중량%), Na20 : 5~20(중량%)을 주성분으로 하는 소다라임유리로 되는 것으로서 유리식기, 유리제 포장용 병등으로서 널리 일반적으로 사용되고 있는 것이다.The glass container of the present invention is composed of SiO 2 : 60 to 80 (wt%), Ca 0: 5 to 20 (wt%), and Na 2 0: 5 to 20 (wt%) as soda-lime glass as a main component. It is widely used generally as a tableware, a glass packaging bottle, etc.
상기 주성분외에 미량의 Al2O3, K2O, MgO등을 포함하는 것이라도 무방한 것임은 말할 것도 없고, 또 착색을 목적으로 하여 필요량의 Fe, Cu, Cr, Ni 등의 화합물이 첨가되는 경우도 있다.It is needless to say that a small amount of Al 2 O 3 , K 2 O, MgO, or the like may be added to the main component, and compounds such as Fe, Cu, Cr, and Ni in necessary amounts are added for coloring purposes. In some cases.
냉각풍에 의한 급랭 강화법이란, 주지하는 바와같이 600~700℃의 온도영역에 있는 유리 표면을 냉각풍에 의해 급랭시켜 유리표면에 압축응력층을 형성하여 유리를 강화하는 방법이다.As is well known, the quench strengthening method by cooling wind is a method of strengthening glass by rapidly cooling a glass surface in a temperature range of 600 to 700 ° C. with a cooling wind to form a compressive stress layer on the glass surface.
먼저 유리용기의 표면에 냉각풍에 의해 압축응력층을 균일하게 형성하기 위해서는 냉각에어의 공급을 확실하게 행할 필요가 있다.First, in order to form a compressive stress layer uniformly by the cooling wind on the surface of a glass container, it is necessary to reliably supply cooling air.
이 목적을 위하여 유리용기의 바람직한 형상 범위가 규정된다.For this purpose a preferred shape range of the glass container is defined.
즉 제 1 도에 도시한 바와같이 개방 형상을 가지는 유리용기(10)에 있어서, 안쪽의 깊이(D)가 15cn이하로, 바다면에 대한 개방부의 개방각도(d2)의 45도 이상인 것이 보다 균일 또한 확실하게 냉각에어의 공급을 행할 수 있고, 또 보다 공정이 안정된 급랭 강화 처리를 실시할 수 있다.That is according to claim 1 a
이 형상 범위외의 용기에 있어서는 통상의 에어공급 방법에서는 유리용기표면에 대한 에어공급이 확실하게 행해지지 않고 따라서 균일한 압축응력층의 형성이 어렵다.In containers outside this shape range, air supply to the surface of the glass container is not reliably performed in the normal air supply method, and therefore, it is difficult to form a uniform compressive stress layer.
다음에 압축응력층의 응력치는 그 값에 비례하여 유리자체의 강도가 향상되는 것이나, 예컨대 700kg/cm2이상의 응력층을 형성하려고 하면, 응력치의 편차를 피할 수 없고 따라서 국부적으로 대단히 높은 응력치를 가지는 개소가 생겨 커다란 평면 왜곡이 발생, 파손시에 유리파편이 비산하는 위험성이 있다.Next, the stress value of the compressive stress layer improves the strength of the glass itself in proportion to the value thereof. However, when attempting to form a stress layer of 700 kg / cm 2 or more, the variation of the stress value is unavoidable and thus has a locally very high stress value. There is a danger that large plane distortion occurs, causing the glass fragments to scatter in case of breakage.
또 그 응력치가 250kg/cm2미만이면, 소망하는 내열강도(온도차 120℃이상)를 얻을 수 없다. 이와같은 것으로 유리용기의 내외표면에 형성되는 압축응력층은 250~650kg/cm2범위의 응력치인 것이 바람직하다.If the stress value is less than 250 kg / cm 2 , the desired heat resistance (temperature difference of 120 ° C. or more) cannot be obtained. As such, the compressive stress layer formed on the inner and outer surfaces of the glass container is preferably a stress value in the range of 250 ~ 650kg / cm 2 .
다시 상기와 같은 응력치를 갖도록 한 급랭강화 방법으로서는 유리용기에 대하여 그 표면에 있어서의 열전달 계수(h)가 대략 0.001cal/sec·m2·℃정도가 되도록 천천히 냉각풍을 쏘여서 냉각강화를 하는 것이 바람직하다. 일반적으로 알려진 바와같이 잔류응력은 열 팽창 계소, 유리두께 및 열 전달율에 비례한다.As a quenching strengthening method which has the above stress value again, the cooling vessel is slowly strengthened by slowly cooling the wind so that the heat transfer coefficient (h) on the surface of the glass container is approximately 0.001 cal / sec · m 2 · ° C. desirable. As is generally known, residual stresses are proportional to thermal expansion source, glass thickness and heat transfer rate.
그리고 열 전달율(h)은 통상의 자연 대류에서는 0.0002~0.0003cal/sec·m2·℃인바, 현재 행해지고 있는 바의 일반적 급냉강화에서는 대충 0.005이다.The heat transfer rate h is in the range of 0.0002 to 0.0003 cal / sec · m 2 · ° C. in the normal natural convection, and is about 0.005 in the general quenching strengthening of the bar currently being performed.
그러나 이와같은 급격한 냉각에서는 압축응력치가 높아지고, 상기한 바와같은 유리 파손시에 있어서의 유리 비산의 우려가 있다.However, in such rapid cooling, the compressive stress value increases, and there is a fear of glass scattering at the time of glass breakage as described above.
그래서 본 발명에서는 이 열전달율(h)을 대충 0.001정도가 되도록 천천히 냉각함으로써, 유리비산이 없고, 또한 충분한 내열강도를 갖도록 한 것이다.Therefore, in the present invention, the heat transfer rate h is slowly cooled to approximately 0.001, so that there is no glass scattering and sufficient heat resistance.
이와같이 하여 얻어진 유리용기에 있어서는, 내외표면에 급랭강화법에 의한 압축 응력층이 형성되어 있고, 이 압축응력층이 인장응력에 의한 파괴응력을 대폭적으로 향상시키는 동시에, 압축응력층의 존재에 의해 열피로가 완전히 방지되기 때문에, 급랭시의 온도차에 의한 열 충격에 대한 강도가 올라 결과적으로 내열강도를 향상시키게 된다.In the glass container obtained in this way, a compressive stress layer is formed on the inner and outer surfaces by a quench strengthening method, and the compressive stress layer greatly improves the fracture stress caused by the tensile stress and the thermal fatigue due to the presence of the compressive stress layer. Since is completely prevented, the strength against thermal shock due to the temperature difference during quenching is increased, and as a result, the heat resistance is improved.
또, 상기의 압축 응력치는 250~650kg/cm2의 범위내에 있기 때문에, 파손시에 유리파편이 비산되지 않아 안전하다.Moreover, since the said compressive stress value exists in the range of 250-650 kg / cm <2> , glass fragments are not scattered at the time of breakage, and are safe.
[실시예]EXAMPLE
다음에 실시예를 설명하면, 첨부된 도면 제 1 도는 본 발명의 1실시예를 도시하는 유리용기의 1예를 도시하는 중앙 종단면도, 제 2 도는 유리두께와 압축응력치의 관계를 도시하는 그래프, 제 3 도는 열처리 공정에 있어서의 온도 변화를 도시하는 그래프, 제 4 도는 열처리 공정에 있어서의 온도 변화를 도시하는 그래프, 제 5 도는 이 발명에 의한 유리 용기의 내열피로성을 도시하는 그래프, 제 6 도는 미강화 유리의 내열 피로성을 도시하는 그래프이다.Next, a description will be given of an embodiment, in which the accompanying drawings, in which FIG. 1 is a central longitudinal cross-sectional view showing an example of a glass container showing an embodiment of the present invention, FIG. 2 is a graph showing the relationship between the glass thickness and the compressive stress value; 3 is a graph showing the temperature change in the heat treatment step, FIG. 4 is a graph showing the temperature change in the heat treatment step, FIG. 5 is a graph showing the thermal fatigue resistance of the glass container according to the present invention, and FIG. It is a graph which shows the heat fatigue resistance of unreinforced glass.
제 3 도에 도시한 바와같이 먼저 공지된 유리 성형기(20)에 의해 제 1 도에 도시한 바와같이 소다라임유리로 되는 작은주발(10)이 형성된다. 이 유리 작은 주발(10)의 조성(중량%)은 다음과 같다.As shown in FIG. 3, the
SiO2: 72.5, CaO : 11.5, Na2O : 13.0, Al2O3: 1.5, K2O : 1.0, MgO : 0.5 이 작은 주발의 형상은 개방부 내경 140mm, 동체부 내경 120mm, 깊이(D)50mm, 최대두께 5.5mm, 최소두께 3.5mm로, 바닥면에 대한 개방부 개방각도(d1)는 약 15도, 바닥부의 반경(r)이 36도, 그 중심각도(d2)는 75도이다.SiO 2 : 72.5, CaO: 11.5, Na 2 O: 13.0, Al 2 O 3 : 1.5, K 2 O: 1.0, MgO: 0.5 The shape of this small bowl is 140 mm in the opening, 120 mm in the fuselage and the depth (D 50mm, maximum thickness 5.5mm, minimum thickness 3.5mm, the opening angle (d 1 ) for the floor is about 15 degrees, the radius of the bottom (r) is 36 degrees, and the center angle (d 2 ) is 75 degrees. It is also.
상기한 작은주발(10)의 성형후, 제 3 도에 도시된 바와같이 작은 주발(10)은 컨베이어(21)를 경유하여 개구굽기공정(30)에 이송된다. 개구굽기공정(30)에서 개방부가 가열 성형된 후, 예비가열공정(35)을 거쳐 제품의 전체온도의 편차를 보다 작게하고, 다음의 온도 조절공정(40)에 이송된다. 이 온도조절공정(40)에서는 제 4 도의 온도 그래프와 같이 유리의 제품온도를 대략 650℃플러스 마이너스 30℃이내가 되도록 온도조절한다.After molding of the
그리고, 이 온도조정공정(40)후, 냉각공정(50)에 들어간다.Then, after the
실시예에서는 제품의 표면온도가 약 640℃인때에, 노즐에서 온도약 15℃의 냉각풍을 풍속 10m/초로 약 20초간 분사하여 급냉강화를 실시하고, 유리표면 온도를 약 300℃까지 강온 하였다(또한 종래의 급냉강화에서는 통상 10초이하에서 약 200℃까지 급격하게 강온하는 것이 일반적이다. 제 4 도의 그래프중의 파선부분 참조).In the embodiment, when the surface temperature of the product is about 640 ° C, the cooling air of about 15 ° C was blown out at the nozzle for about 20 seconds at a wind speed of 10m / sec for rapid cooling and the glass surface temperature was lowered to about 300 ° C. (In general, in the rapid quenching, the temperature is generally rapidly lowered from about 10 seconds to about 200 ° C. See the broken line in the graph of FIG. 4).
냉각공정(50)후, 컨베이어(51, 52)등을 거쳐 유리작은 주발을 실온까지 서서히 냉각시킨다.After the
상기와 같은 제조법으로 얻어진 유리작은 주발표면의 압축응력층의 두께는 약 750μ로, 그 압축응력치는 평균 540kg/cm2였었다.The thickness of the compressive stress layer on the main surface of the glass small obtained by the above-described manufacturing method was about 750 µ, and the compressive stress value was 540 kg / cm 2 on average.
여기서 유리두께와 압축응력치의 관계에 대하여 부연하면, 제 2 도는 그 양자의 관계를 나타내는 그래프이다. 동 도면에서 이해되는 바와같이, 유리두께(t)와 압축 응력치는 거의 일정한 비례관계에 있고, 압축응력치 250~650kg/cm2의 범위내의 유리제품의 두께(t)는 대략 2.5~6.5mm의 범위내에 있다.Here, if the relationship between the glass thickness and the compressive stress value is added, Fig. 2 is a graph showing the relationship between the two. As understood from the figure, the glass thickness t and the compressive stress value are in a substantially constant proportional relationship, and the thickness t of the glass product within the compressive stress value of 250 to 650 kg / cm 2 is approximately 2.5 to 6.5 mm. It is in range.
[실험예]Experimental Example
다음에 이 발명 방법에 의한 유리제품의 비교실험예에 대하여 설명한다. 먼저 제품형상에 특히 바닥부 곡면부의 형상에 관하여 발명품과 대비품과의 실험 결과에 대하여 기술한다.Next, the comparative experiment example of the glassware by this method is demonstrated. First, the experimental results of the invention and the contrast product will be described with respect to the shape of the product, especially the shape of the bottom curved portion.
어느 것이나 동질의 소다라임유리로 형성되고, 깊이 50mm, 내경 약 120mm, 두께 3.8~4.6의 범위내에 있는 환형주발(丸形鉢)이다.All are formed of homogeneous soda-lime glass, and are annular bowls having a depth of 50 mm, an inner diameter of about 120 mm, and a thickness of 3.8 to 4.6.
제품 A는 본 발명품으로 B는 대비품이다. 강화조건은 같이 제품온도 약 640℃로 균일하게 가열 후, 15℃로 풍속 10m/초의 냉각풍으로 급냉시켜 제품표면에 압축 응력치 350~450kg/cm2의 압축응력층을 형성한 것이다.Product A is the present invention and B is a counterpart. The reinforcement condition is to uniformly heat the product temperature to about 640 ℃ and then quench it with a cooling wind of 10m / sec wind speed at 15 ℃ to form a compressive stress layer with compressive stress value of 350 ~ 450kg / cm 2 on the product surface.
시험방법은 유리주발의 ①의 바닥 중심부 및 ②바닥 곡면부를 앞끝이 예민한 펀치를 해머로 두드리면서 서서히 상처를 깊게 해가면서 그 파손 상태를 관찰하는 방법이다.The test method is a method of observing the state of breakage while gradually deepening the wound while hammering a punch with a sharp edge at the bottom center and the bottom curved part of the glass cylinder.
다음에 제 5 도 및 제 6 도에 따라 내열피로 시험에 대하여 설명한다.Next, the thermal fatigue test will be described with reference to FIGS. 5 and 6.
이 실험에서는 급냉강화후의 압축응력치가 약 280kg/cm2의 유리제품(연화점 720℃의 소다라임유리로 직경 6~6.5mm의 둥근막대)에 대하여 열 충격시험을 한 것으로, 제 5 도의 상부의 흰공은 열충격 온도차가 150℃의 경우, 하부의 검은 공은 고의로 상처를 가하고 또한 열 충격온도차가 120℃의 경우이다.In this experiment, a thermal shock test was carried out on a glass product with a compressive stress value of about 280 kg / cm 2 (rounded bar with a diameter of 6 to 6.5 mm with a soda-lime glass of 720 ° C softening point) after quenching and strengthening. When the thermal shock temperature difference is 150 ° C, the lower black ball is intentionally wounded and the thermal shock temperature difference is 120 ° C.
어느 경우도 30회의 충격회수에서는 굽힘 강도의 변화가 발생되지 않고, 열 피로가 거의 발생되지 않았다.In any case, the change in bending strength did not occur and the thermal fatigue hardly occurred at 30 impact times.
이에 대하여 제 6 도는 제 5 도와 동일한 유리제품의 미강화의 것에 대하여 행한 실험이나, 이 미강화품에서는 열충격 회수 15회까지 굽힘 강도는 연속적으로 저하되고, 30회에서는 35개중의 2개가 파손하여 커다란 열피로가 발생된 것을 알 수 있다.On the other hand, FIG. 6 shows an experiment performed on the unreinforced glass products of the same as that of FIG. 5, but in this unreinforced product, the bending strength is continuously lowered up to 15 times of the number of thermal shocks. It can be seen that thermal fatigue has occurred.
이상 도시하여 설명한 바와같이, 이 발명에 의하면 충분한 내열성을 가지는 동시에 파손시에 있어서의 비산현상도 없고, 또 생산효율도 좋으며 양산성이 높고, 제조 코스트도 염가인 소다라임유리로 되는 내열유리 용기의 제조방법을 제공할 수 있게 된 것이다.As shown and described above, according to the present invention, a heat-resistant glass container made of soda-lime glass having sufficient heat resistance, no scattering at the time of breakage, good production efficiency, high productivity, and low manufacturing cost is also provided. It will be able to provide a manufacturing method.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2-88090 | 1990-04-02 | ||
| JP2088090A JPH03285836A (en) | 1990-04-02 | 1990-04-02 | Manufacture of heat-resistant glass container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR910018317A KR910018317A (en) | 1991-11-30 |
| KR930009886B1 true KR930009886B1 (en) | 1993-10-13 |
Family
ID=13933169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019900010661A Ceased KR930009886B1 (en) | 1990-04-02 | 1990-07-13 | Manufacture of heat-resistant glass container |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH03285836A (en) |
| KR (1) | KR930009886B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101347039B1 (en) * | 2011-12-15 | 2014-01-16 | 삼광유리 주식회사 | Heat resistant soda-lime glass with low thermal expansion and manufacturing method thereof |
| KR101964705B1 (en) * | 2018-07-06 | 2019-04-02 | 클래드코리아포항 주식회사 | Dimensioning unit of pipe and dispenser device of pipe using the same |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9133051B2 (en) | 2010-05-25 | 2015-09-15 | Emhart Glass S.A. | Cooling shroud for a post-manufacture glass container thermal strengthening station |
| US8839644B2 (en) * | 2010-05-25 | 2014-09-23 | Emhart Glass S.A. | Post-manufacture glass container thermal strengthening method |
| US8650908B2 (en) * | 2010-05-25 | 2014-02-18 | Emhart Glass S.A. | Post-manufacture glass container thermal strengthening on a conveyor |
| JP2014161437A (en) * | 2013-02-22 | 2014-09-08 | Ishizuka Glass Co Ltd | Multipurpose reinforced glass tableware |
| EP4431471A1 (en) * | 2023-03-17 | 2024-09-18 | Vetropack Holding AG | Tempered glass bottle with thin wall thickness |
| EP4431470A1 (en) * | 2023-03-17 | 2024-09-18 | Vetropack Holding AG | Tempered glass bottle with sandwich structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63270330A (en) * | 1987-04-24 | 1988-11-08 | Ishizuka Glass Ltd | How to improve the heat resistance of soda lime glass containers |
-
1990
- 1990-04-02 JP JP2088090A patent/JPH03285836A/en active Pending
- 1990-07-13 KR KR1019900010661A patent/KR930009886B1/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101347039B1 (en) * | 2011-12-15 | 2014-01-16 | 삼광유리 주식회사 | Heat resistant soda-lime glass with low thermal expansion and manufacturing method thereof |
| KR101964705B1 (en) * | 2018-07-06 | 2019-04-02 | 클래드코리아포항 주식회사 | Dimensioning unit of pipe and dispenser device of pipe using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03285836A (en) | 1991-12-17 |
| KR910018317A (en) | 1991-11-30 |
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