Location:
Homepage
/
/
[Knowledge] How to distinguish between good and bad aluminum?

[Knowledge] How to distinguish between good and bad aluminum?

  • Categories:News
  • Author:
  • Origin:
  • Time of issue:2021-07-29
  • Views:0

(Summary description)6063 alloy is an alloy prepared with aluminum, magnesium, and silicon as the main elements. Each element has a certain range of content, and the price of magnesium is high. In order to reduce costs, some manufacturers reduce the amount of magnesium to the allowable content.

[Knowledge] How to distinguish between good and bad aluminum?

(Summary description)6063 alloy is an alloy prepared with aluminum, magnesium, and silicon as the main elements. Each element has a certain range of content, and the price of magnesium is high. In order to reduce costs, some manufacturers reduce the amount of magnesium to the allowable content.

  • Categories:News
  • Author:
  • Origin:
  • Time of issue:2021-07-29
  • Views:0
Information

1. Alloying elements

6063 alloy is an alloy prepared with aluminum, magnesium, and silicon as the main elements. Each element has a certain range of content, and the price of magnesium is high. In order to reduce costs, some manufacturers reduce the amount of magnesium to the allowable content. Some even worse, the magnesium content is lower than the allowable content. Some factories add waste wires and waste aluminum pots to the alloy, basically not talking about 6063 alloy. As a result, the mechanical strength of the aluminum profile is very low, {TodayHot} can be so low that it is easy to bend with both hands, and it is commonly known as soft as "noodles". This is one of the reasons why aluminum can be thousands of dollars cheaper.

Regular aluminum manufacturers have internal standards when formulating alloy components, that is, within the range of various element content, each factory has its own smaller range of changes, and the ratio of aluminum, magnesium, and silicon is very strict. Each factory has its own data and keeps each other confidential. Only the alloy made with qualified formula can guarantee the quality, otherwise the quality will not be improved on how to process it in the future.

2. Aluminum alloy melting furnace

How to melt the prepared 6063 alloy and what kind of furnace is used are also crucial. {HotTag} currently uses domestic furnaces ranging from the 1940s to the 90s. The poor manufacturers use the original crucible boilers. There are coal-burning, oil-burning, gas-burning and electric heating smelting furnaces. Some stoves have chimneys, and some have no chimneys. Generally used are square furnaces (rectangular furnaces), the advanced ones are round furnaces, and some round furnaces can be tilted to pour molten aluminum. In terms of tonnage, there are one, two, five, ten, twenty-five, and fifty-ton aluminum melting furnaces. More advanced, add a static furnace below the aluminum melting furnace, which is mainly used for preparing 6063 alloy, which can be used for slagging and degassing in this furnace, standing, and then casting aluminum rods for extrusion use. The quality of the alloy prepared in the original coal-fired furnace and the modern round furnace is absolutely different. Generally, furnaces should have a chimney no matter what fuel is burned. Most of the waste gas and slag produced during the combustion of the fuel can be discharged from the chimney. If all the flue gas and waste slag are melted in the aluminum water, so that the aluminum rod for extrusion is cast, there are serious slag bubbles inside, which is one of the reasons for the poor quality of aluminum, which is also one of the reasons for the cheap aluminum price.

3. Alloy casting

The level of domestic casting equipment is also very different. The old domestic casting equipment includes iron mold casting at the level of the 1940s, and advanced hydraulic semi-continuous casting. The crystalline structure of iron mold casting rods is very poor, and there are a lot of slag and bubbles in the rods, and the quality of the rods is very poor. Nowadays, horizontal casting (also called continuous casting) and semi-continuous casting are more commonly used in general factories. , Semi-continuous casting most of the wire rope transmission, good hydraulic transmission. The length of semi-continuous casting rods varies, generally from 3 meters, 4 meters to 8 meters. Semi-continuous casting is a pit type, where it is lowered while casting, and the surroundings are cooled with cold water on all sides. Due to the uniform water cooling, the crystal structure of the casting rod is uniform and fine. However, the downward transmission of the steel wire rope is not as stable as the hydraulic transmission. The surface of the hydraulic casting rod is smoother than other casting rods. The smooth surface of the cast rod is one of the prerequisites for extruding a good profile. The surface of the cast rods cast by other methods is relatively rough. In order to ensure the quality of the profiles, sometimes the cast rods are cut first to remove the rough appearance of the cast rods. The commonly used semi-continuous casting molds are advanced, hot-top-level casting molds. The characteristics of this casting mold can cast several to dozens at a time. At the same time, the casting quality is good, and there are high-quality 6063 aluminum alloy casting rods. , It is possible to produce good aluminum profiles. If it is impossible to cast good cast rods with the original outdated casting equipment, it is impossible to produce good aluminum profiles at all. There are many aluminum factories in China that do not have the equipment to produce aluminum rods. Instead, they purchase 6063 alloy rods from electric aluminum factories or other factories. In such aluminum factories, the quality of aluminum is in the hands of the casting rod factory, and the aluminum produced It is difficult to achieve stable quality of materials. Compared with advanced casting equipment, the use of backward equipment is that the investment is small and the production cost is low, which is one of the reasons why the sales price difference of aluminum is large.

4. Profile extrusion

There are many types of profile extruders in my country, and the grades are very different. There are factories’ own simple extruders, modified by plastic extrusion machines, and a small number of domestic ones, followed by most of them from Taiwan, Guizi, the United States and Germany, hydraulic and hydraulic. In short, hundreds of domestic extrusion presses are diverse. It is generally believed that Guizi, the United States, and Germany are better, followed by Taiwan. Good and bad extruders, the same cast rods, the quality of extruded profiles is never different. We often see 6063T5 used for building aluminum doors and windows, which is an American brand internationally used. The Chinese brand is LD31RCS. Both T5 and RCS indicate the state, which means the air-cooled quenching artificial aging state. The quenching of metals is quenching when the high temperature suddenly drops to a low temperature. For example, the blade of a steel knife needs to be quenched in water to be hard and sharp. The quenching of aluminum also includes water-cooled quenching and air-cooled quenching. The 6063 profile for construction is quenched by air cooling. The quenched aluminum is placed in an aging furnace for a certain period of time, the internal crystals of the aluminum are rearranged, and the mechanical strength is significantly improved. Among all the alloys of metals, only aluminum alloy has a aging state. 1. Alloying elements

6063 alloy is an alloy prepared with aluminum, magnesium, and silicon as the main elements. Each element has a certain range of content, and the price of magnesium is high. In order to reduce costs, some manufacturers reduce the amount of magnesium to the allowable content. Some even worse, the magnesium content is lower than the allowable content. Some factories add waste wires and waste aluminum pots to the alloy, basically not talking about 6063 alloy. As a result, the mechanical strength of the aluminum profile is very low, {TodayHot} can be so low that it is easy to bend with both hands, and it is commonly known as soft as "noodles". This is one of the reasons why aluminum can be thousands of dollars cheaper.

Regular aluminum manufacturers have internal standards when formulating alloy components, that is, within the range of various element content, each factory has its own smaller range of changes, and the ratio of aluminum, magnesium, and silicon is very strict. Each factory has its own data and keeps each other confidential. Only the alloy made with qualified formula can guarantee the quality, otherwise the quality will not be improved on how to process it in the future.

2. Aluminum alloy melting furnace

How to melt the prepared 6063 alloy and what kind of furnace is used are also crucial. {HotTag} currently uses domestic furnaces ranging from the 1940s to the 90s. The poor manufacturers use the original crucible boilers. There are coal-burning, oil-burning, gas-burning and electric heating smelting furnaces. Some stoves have chimneys, and some have no chimneys. Generally used are square furnaces (rectangular furnaces), the advanced ones are round furnaces, and some round furnaces can be tilted to pour molten aluminum. In terms of tonnage, there are one, two, five, ten, twenty-five, and fifty-ton aluminum melting furnaces. More advanced, add a static furnace below the aluminum melting furnace, which is mainly used for preparing 6063 alloy, which can be used for slagging and degassing in this furnace, standing, and then casting aluminum rods for extrusion use. The quality of the alloy prepared in the original coal-fired furnace and the modern round furnace is absolutely different. Generally, furnaces should have a chimney no matter what fuel is burned. Most of the waste gas and slag produced during the combustion of the fuel can be discharged from the chimney. If all the flue gas and waste slag are melted in the aluminum water, so that the aluminum rod for extrusion is cast, there are serious slag bubbles inside, which is one of the reasons for the poor quality of aluminum, which is also one of the reasons for the cheap aluminum price.

3. Alloy casting

The level of domestic casting equipment is also very different. The old domestic casting equipment includes iron mold casting at the level of the 1940s, and advanced hydraulic semi-continuous casting. The crystalline structure of iron mold casting rods is very poor, and there are a lot of slag and bubbles in the rods, and the quality of the rods is very poor. Nowadays, horizontal casting (also called continuous casting) and semi-continuous casting are more commonly used in general factories. , Semi-continuous casting most of the wire rope transmission, good hydraulic transmission. The length of semi-continuous casting rods varies, generally from 3 meters, 4 meters to 8 meters. Semi-continuous casting is a pit type, where it is lowered while casting, and the surroundings are cooled with cold water on all sides. Due to the uniform water cooling, the crystal structure of the casting rod is uniform and fine. However, the downward transmission of the steel wire rope is not as stable as the hydraulic transmission. The surface of the hydraulic casting rod is smoother than other casting rods. The smooth surface of the cast rod is one of the prerequisites for extruding a good profile. The surface of the cast rods cast by other methods is relatively rough. In order to ensure the quality of the profiles, sometimes the cast rods are cut first to remove the rough appearance of the cast rods. The commonly used semi-continuous casting molds are advanced, hot-top-level casting molds. The characteristics of this casting mold can cast several to dozens at a time. At the same time, the casting quality is good, and there are high-quality 6063 aluminum alloy casting rods. In order to be able to produce good aluminum profiles, if it is impossible to cast good cast rods with the original outdated casting equipment, it is impossible to produce good aluminum profiles at all. There are many aluminum factories in China that do not have the equipment to produce aluminum rods. Instead, they purchase 6063 alloy rods from electric aluminum factories or other factories. In such aluminum factories, the quality of aluminum is in the hands of the casting rod factory, and the aluminum produced It is difficult to achieve stable quality of materials. Compared with advanced casting equipment, the use of backward equipment is that the investment is small and the production cost is low, which is one of the reasons why the sales price difference of aluminum is large.

4. Profile extrusion

There are many types of profile extruders in my country, and the grades are very different. There are factories’ own simple extruders, modified by plastic extrusion machines, and a small number of domestic ones, followed by most of them from Taiwan, Guizi, the United States and Germany, hydraulic and hydraulic. In short, hundreds of domestic extrusion presses are diverse. It is generally believed that Guizi, the United States, and Germany are better, followed by Taiwan. Good and bad extruders, the same cast rods, the quality of extruded profiles is never different. We often see 6063T5 used for building aluminum doors and windows, which is an American brand internationally used. The Chinese brand is LD31RCS. Both T5 and RCS indicate the state, which means the air-cooled quenching artificial aging state. The quenching of metals is quenching when the high temperature suddenly drops to a low temperature. For example, the blade of a steel knife needs to be quenched in water to be hard and sharp. The quenching of aluminum also includes water-cooled quenching and air-cooled quenching. The 6063 profile for construction is quenched by air cooling. The quenched aluminum is placed in an aging furnace for a certain period of time, the internal crystals of the aluminum are rearranged, and the mechanical strength is significantly improved. Among all the alloys of metals, only aluminum alloy has a aging state. 1. Alloying elements

6063 alloy is an alloy prepared with aluminum, magnesium, and silicon as the main elements. Each element has a certain range of content, and the price of magnesium is high. In order to reduce costs, some manufacturers reduce the amount of magnesium to the allowable content. Some even worse, the magnesium content is lower than the allowable content. Some factories add waste wires and waste aluminum pots to the alloy, basically not talking about 6063 alloy. As a result, the mechanical strength of the aluminum profile is very low, {TodayHot} can be so low that it is easy to bend with both hands, and it is commonly known as soft as "noodles". This is one of the reasons why aluminum can be thousands of dollars cheaper.

Regular aluminum manufacturers have internal standards when formulating alloy components, that is, within the range of various element content, each factory has its own smaller range of changes, and the ratio of aluminum, magnesium, and silicon is very strict. Each factory has its own data and keeps each other confidential. Only the alloy made with qualified formula can guarantee the quality, otherwise the quality will not be improved on how to process it in the future.

2. Aluminum alloy melting furnace

How to melt the prepared 6063 alloy and what kind of furnace is used are also crucial. {HotTag} currently uses domestic furnaces ranging from the 1940s to the 90s. The poor manufacturers use the original crucible boilers. There are coal-burning, oil-burning, gas-burning and electric heating smelting furnaces. Some stoves have chimneys, and some have no chimneys. Generally used are square furnaces (rectangular furnaces), the advanced ones are round furnaces, and some round furnaces can be tilted to pour molten aluminum. There are one, two, five, ten, twenty-five, and fifty-ton aluminum melting furnaces in terms of tonnage. More advanced, add a static furnace below the aluminum melting furnace, which is mainly used for preparing 6063 alloy, which can be used for slagging and degassing in this furnace, standing, and then casting aluminum rods for extrusion use. The quality of the alloy prepared in the original coal-fired furnace and the modern round furnace is absolutely different. Generally, furnaces should have a chimney no matter what fuel is burned. Most of the waste gas and slag produced during the combustion of the fuel can be discharged from the chimney. If all the flue gas and waste slag are melted in the aluminum water, so that the aluminum rod for extrusion is cast, there are serious slag bubbles inside, which is one of the reasons for the poor quality of aluminum, which is also one of the reasons for the cheap aluminum price.

3. Alloy casting

The level of domestic casting equipment is also very different. The old domestic casting equipment includes iron mold casting at the level of the 1940s, and advanced hydraulic semi-continuous casting. The crystalline structure of iron mold casting rods is very poor, and there are a lot of slag and bubbles in the rods, and the quality of the rods is very poor. Nowadays, horizontal casting (also known as continuous casting) and semi-continuous casting are more commonly used in general factories. , Semi-continuous casting most of the wire rope transmission, good hydraulic transmission. The length of semi-continuous casting rods varies, generally from 3 meters, 4 meters to 8 meters. Semi-continuous casting is a pit type, where it is lowered while casting, and the surroundings are cooled with cold water on all sides. Due to the uniform water cooling, the crystal structure of the casting rod is uniform and fine. However, the downward transmission of the steel wire rope is not as stable as the hydraulic transmission. The surface of the hydraulic casting rod is smoother than other casting rods. The smooth surface of the cast rod is one of the prerequisites for extruding a good profile. The surface of the cast rods cast by other methods is relatively rough. In order to ensure the quality of the profiles, sometimes the cast rods are cut first to remove the rough appearance of the cast rods. The commonly used semi-continuous casting molds are advanced, hot-top-level casting molds. The characteristics of this casting mold can cast several to dozens at a time. At the same time, the casting quality is good, and there are high-quality 6063 aluminum alloy casting rods. In order to be able to produce good aluminum profiles, if it is impossible to cast good cast rods with the original outdated casting equipment, it is impossible to produce good aluminum profiles at all. There are many aluminum factories in China that do not have the equipment to produce aluminum rods. Instead, they purchase 6063 alloy rods from electric aluminum factories or other factories. In such aluminum factories, the quality of aluminum is in the hands of the casting rod factory, and the aluminum produced It is difficult to achieve stable quality of materials. Compared with advanced casting equipment, the use of backward equipment is that the investment is small and the production cost is low, which is one of the reasons why the sales price difference of aluminum is large.

4. Profile extrusion

There are many types of profile extruders in my country, and the grades are very different. There are factories’ own simple extruders, modified by plastic extrusion machines, and a small number of domestic ones, followed by most of them from Taiwan, Guizi, the United States and Germany, hydraulic and hydraulic. In short, hundreds of domestic extrusion presses are diverse. It is generally believed that Guizi, the United States, and Germany are better, followed by Taiwan. Good and bad extruders, the same cast rods, the quality of extruded profiles is never different. We often see 6063T5 used for building aluminum doors and windows, which is an American brand internationally used. The Chinese brand is LD31RCS. Both T5 and RCS indicate the state, which means the air-cooled quenching artificial aging state. The quenching of metals is quenching when the high temperature suddenly drops to a low temperature. For example, the blade of a steel knife needs to be quenched in water to be hard and sharp. The quenching of aluminum also includes water-cooled quenching and air-cooled quenching. The 6063 profile for construction is quenched by air cooling. The quenched aluminum is placed in an aging furnace for a certain period of time, the internal crystals of the aluminum are rearranged, and the mechanical strength is significantly improved. Among all the metal alloys, only aluminum alloy has a aging state.

Scan the QR code to read on your phone

HOT INFO

Service hotline

Mobile:+86-13783490138
Email:Raymond.wu@westenal.com

Address: No. 5 Xingye Street, Shangjie District, Zhengzhou City, Henan Province

Mobile station

Mobile station

Wechat

Wechat

Copyright © Zhengzhou Westen Aluminum Industry Co., Ltd.

Copyright © Zhengzhou Westen Aluminum Industry Co., Ltd.