2019年9月5日（木）
With their amazing qualities for workability
. With their amazing qualities for workability, they are prone to the formation of Lüders bands during forming and thus, they are used mostly for inner-panel applications. Present R&D efforts are focused on heating the sheet to warm forming temperature while keeping the dies at room temperature. This can be reduced by increasing the blank holder force, the amount of stretching and the sheet thickness. For closures and body-structure sheets, the thickness should be increased by a factor of about 1. They have relatively good formability and highly resistant to corrosion. There are other series of alloys which are great for ultimate tensile strength of 125 to 400 MPa.
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Critical Material Parameters
There are some critical parameters of aluminum sheet suppliers look out for as aluminum differs from steel and it can affect the formability:
Elastic Modulus
Using elastic modulus, one-third that of steel and aluminum parts would experience more springback.25 to 0. The elastic modulus of aluminum (70 GPa) is made about one-third that of steel (210 GPa).88 micron. 5754, on the other hand is also recommended for elevated temperature applications.
Formability
For the stamping of autobody parts, the lower formability of aluminum compared to steel can be offset by using technology such as local blank holder force control with multiple-point hydraulic cushions, advanced addendum design or warm forming.
Friction
Friction between the tool and the aluminum sheet by the aluminum sheet suppliers is expected to be higher compared to steel sheet as aluminum has a surface roughness (Ra) from roller coating sheet Manufacturers 0. Aluminum sheet suppliers are tremendously happy about its market share increasing continuously and it is the most commonly used alloy for automotive applications.63 to 0. The smoother texture of aluminum requires dry, waxlike lubricants.
Another way to improve stiffness in aluminum is to increase the ribbing used in the product or increase the part thickness. The alloys like 6022 and 6111 are often used for outer panels since they are precipitation-hardened and free of Lüders bands.
Aluminum is such a crucial material which is used extensively in various industries and especially automotive industry. Thus, in comparison, the Ra of steel sheet is about 0.
Design Guidelines
Since, the design guidelines and requirements are quite strict, the aluminum sheet suppliers are quite careful of the fact that automotive closures must be panel bending stiffness and dent resistance. It is used hugely for the automotive parts as hoods, trunk lids and Prague BLG334 doors as it has qualities like its light weight, durability and recyclability.38 micron.45:1.
5182 and 5754 are the principal 5xxx series alloys which are used in autobody panels. Thus, the parts previously designed for steel needs to be redesigned to achieve the same stiffness.
The mechanical properties it inherits are just apt for automotive body sheets and their specific properties make it great for the industry. The forming operation must be optimized to ensure at least 2% stretch throughout the part
https://www.china-jiahu.com/
Critical Material Parameters
There are some critical parameters of aluminum sheet suppliers look out for as aluminum differs from steel and it can affect the formability:
Elastic Modulus
Using elastic modulus, one-third that of steel and aluminum parts would experience more springback.25 to 0. The elastic modulus of aluminum (70 GPa) is made about one-third that of steel (210 GPa).88 micron. 5754, on the other hand is also recommended for elevated temperature applications.
Formability
For the stamping of autobody parts, the lower formability of aluminum compared to steel can be offset by using technology such as local blank holder force control with multiple-point hydraulic cushions, advanced addendum design or warm forming.
Friction
Friction between the tool and the aluminum sheet by the aluminum sheet suppliers is expected to be higher compared to steel sheet as aluminum has a surface roughness (Ra) from roller coating sheet Manufacturers 0. Aluminum sheet suppliers are tremendously happy about its market share increasing continuously and it is the most commonly used alloy for automotive applications.63 to 0. The smoother texture of aluminum requires dry, waxlike lubricants.
Another way to improve stiffness in aluminum is to increase the ribbing used in the product or increase the part thickness. The alloys like 6022 and 6111 are often used for outer panels since they are precipitation-hardened and free of Lüders bands.
Aluminum is such a crucial material which is used extensively in various industries and especially automotive industry. Thus, in comparison, the Ra of steel sheet is about 0.
Design Guidelines
Since, the design guidelines and requirements are quite strict, the aluminum sheet suppliers are quite careful of the fact that automotive closures must be panel bending stiffness and dent resistance. It is used hugely for the automotive parts as hoods, trunk lids and Prague BLG334 doors as it has qualities like its light weight, durability and recyclability.38 micron.45:1.
5182 and 5754 are the principal 5xxx series alloys which are used in autobody panels. Thus, the parts previously designed for steel needs to be redesigned to achieve the same stiffness.
The mechanical properties it inherits are just apt for automotive body sheets and their specific properties make it great for the industry. The forming operation must be optimized to ensure at least 2% stretch throughout the part
2019年8月29日（木）
Importance of a Good Communication System
Importance of a Good Communication System
A dedicated telephone system plays an important role in improving the business communication between entrepreneurs and clients. One such system that can endow a professional corporate image for SOHO businesses is the virtual VoIP system. PBX phone systems for small businesses help save huge capital expenditure as well as increase business productivity.
Several factors such as the number of extensions required and the capability to support existing equipments and phone numbers have to be considered while choosing PBX phone systems for small businesses.
Feature-rich Hosted PBX Telephone System
https://www.china-jiahu.com/product/mottled-lky303b.html
Hosted IP telephone systems make use of state-of-the-art technologies and are implemented in a virtual manner. These systems provide the same functionalities of expensive premise based PBX systems at a much lesser cost. The inbuilt features in a virtual telephone system include dial by name, dial by extension, auto attendant, caller ID, call screening, call transfer, call forwarding, music on hold, voicemail, fax mail and so on. With the find me follow me call forwarding facility, calls can be routed to the appropriate persons regardless of their current location in real time. This system allows you to program a list of phone numbers where you may be available. Thus you can receive the calls at your residence phone numbers or cell phone numbers when you are away from the office. The unattended calls will be forwarded to a voicemail system.
No Hardware Needed
Hosted PBX phone systems for small businesses can give access to each and every employee as well as multiple departments through a single number. You are not required to purchase, install or maintain any hardware or software on your premises when you opt for virtual VoIP phone systems for your small business. Furthermore, you will not have to request the service of technicians to upgrade or carry out the maintenance at regular intervals, as the hosted phone service providers maintain all the equipments at their site and perform all the necessary repairs there itself.
Disaster recovery is another key feature of hosted telephone systems. Any damage to the public telephone network cannot disrupt the functioning of a hosted PBX system as all functionalities are provided over the internet. The restoration is very easy in the case of virtual phone systems.
A dedicated telephone system plays an important role in improving the business communication between entrepreneurs and clients. One such system that can endow a professional corporate image for SOHO businesses is the virtual VoIP system. PBX phone systems for small businesses help save huge capital expenditure as well as increase business productivity.
Several factors such as the number of extensions required and the capability to support existing equipments and phone numbers have to be considered while choosing PBX phone systems for small businesses.
Feature-rich Hosted PBX Telephone System
https://www.china-jiahu.com/product/mottled-lky303b.html
Hosted IP telephone systems make use of state-of-the-art technologies and are implemented in a virtual manner. These systems provide the same functionalities of expensive premise based PBX systems at a much lesser cost. The inbuilt features in a virtual telephone system include dial by name, dial by extension, auto attendant, caller ID, call screening, call transfer, call forwarding, music on hold, voicemail, fax mail and so on. With the find me follow me call forwarding facility, calls can be routed to the appropriate persons regardless of their current location in real time. This system allows you to program a list of phone numbers where you may be available. Thus you can receive the calls at your residence phone numbers or cell phone numbers when you are away from the office. The unattended calls will be forwarded to a voicemail system.
No Hardware Needed
Hosted PBX phone systems for small businesses can give access to each and every employee as well as multiple departments through a single number. You are not required to purchase, install or maintain any hardware or software on your premises when you opt for virtual VoIP phone systems for your small business. Furthermore, you will not have to request the service of technicians to upgrade or carry out the maintenance at regular intervals, as the hosted phone service providers maintain all the equipments at their site and perform all the necessary repairs there itself.
Disaster recovery is another key feature of hosted telephone systems. Any damage to the public telephone network cannot disrupt the functioning of a hosted PBX system as all functionalities are provided over the internet. The restoration is very easy in the case of virtual phone systems.
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