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Tuesday, July 27, 2021

Factors affecting the price of beryllium copper

International economic situation. The correlation between the commodity market and the economic situation is obvious, especially as the world economy is becoming increasingly globalized, and the commodity market and the economy are more related. Therefore, the price of beryllium copper is closely related to the economic situation.

 

The consumption of beryllium copper is mainly concentrated in developed industrial countries. The economic conditions of these countries such as the United States, Japan, Western Europe and other countries have a greater impact on the price of beryllium copper. Generally speaking, the economic situation is good, the demand for beryllium copper increases, and the price rises, and vice versa decline.

 

   The production status of the producing country. Chile is rich in beryllium copper resources and the world's beryllium copper exporter. Zambia and Zaire in central Africa are also important beryllium copper producing countries. Almost all of the beryllium copper produced by them is used for export. Their production status is important to the international beryllium copper market. great influence. The governance situation in these three countries has always been unstable, and labor disputes have often occurred, which also has a direct impact on the price of beryllium copper.

 

   Seasonal influence. The seasonal fluctuations in the price of beryllium copper are more obvious, with a trough in January and a high price in August. The influence of industry policy.

 

Since copper beryllium is mainly used in electrical, electronic, construction, machinery and transportation industries, the country's industrial policies for these industries have a more important impact on the price of beryllium copper.

 

   The price of the substitute. In the telecommunications industry, beryllium copper has always been an important raw material. However, due to the promotion and application of optical fiber technology, the position of beryllium copper has been challenged. At the same time, aluminum and other metal materials have the same properties as beryllium copper and are also used in most areas of use. Instead of beryllium copper.

 

   The impact of inventory. Inventory is one of the important factors affecting the price of beryllium copper. Under different market conditions, companies will take different measures to increase or decrease inventory. In order to ensure the production of raw materials or speed up the flow of funds, throughput reserves will also be used at different periods to stabilize the beryllium copper market.

 

  The influence of other policies and regulations. Since the beryllium copper machining market is an international market with a large volume of international trade, it is necessary to increase the import and export policies,

 

Changes in factors such as the exchange rate system and the intensity of combating smuggling will also have an impact on the price of beryllium copper.


HLAA News: It Seems Everyone Has a Scam These Days

HLAA News: It Seems Everyone Has a Scam These Days

Link to Hearing Loss Association of America

It Seems Everyone Has a Scam These Days

Posted: 27 Jul 2021 10:05 AM PDT

Barbara Kelley Executive Director Hearing Loss Association of America. In the past three months, I've had my email hacked, received a text that said my Facebook account would be suspended if I didn't...

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Wednesday, July 21, 2021

How to determine the thickness of aluminum alloy die castings?

In the design process of aluminum alloy die castings, many customers are uncertain about the thickness of aluminum alloy die castings, and they do not know how thin the thickness of aluminum alloy die castings can be.

 

1. The aluminum alloy die-cast product wall is also not suitable for too thin, large-scale and too thin walls are prone to defects such as under-casting and cold partition.

 

2. The choice of wall thickness for aluminum alloy die-casting products: under normal conditions, the wall thickness is not suitable to exceed 4.5mm, suitable for small and medium-sized castings: zinc alloy material 1-3mm, aluminum and magnesium alloy 1.5-4mm, alloy copper 2- 4mm.

 

3. The thickness of aluminum alloy die-casting products should be uniform, which is beneficial to the additional condensation of aluminum alloy liquid after "filling". It can prevent the disadvantages of forging ground stress, shrinkage porosity and cracks.

 

4. For the thick-walled pipe part of the aluminum die-casting product variety, ribs or cast inserts can be selected to enhance its physical properties and improve process performance.

 

Therefore, in the thick wall design of aluminum alloy die-casting parts, it is not suitable to choose the method of raising the thickness of the wall to increase the bearing capacity of aluminum die-casting products. When the thickness of the casting exceeds the necessary limit, its impact toughness will decrease accordingly. Excessive thickness of the silicone casting wall will easily cause shrinkage porosity and air vents, and will cause the initial setting of the aluminum alloy die-casting production process to cause long initial setting, large shrinkage, core pulling, difficult demolding and other unfavorable conditions.

 

We focus on aluminum alloy die-casting customization and have many experienced die-casting production teams. We can also provide you with reasonable and effective suggestions during the process of thick wall control of aluminum alloy die-casting parts!

 

Copyright notice: This article comes from https://swissmachined.com/

Please keep the source and address of this article for reprinting: https://swissmachined.com/how-to-determine-the-thickness-of-aluminum-alloy-die-castings/

 


Precision CNC machining manufacturers explain how CNC CNC lathes are processed

According to the introduction of precision CNC machining manufacturers, the large-scale CNC machining parts are made of bar materials, and the process plan of rough machining and finishing is adopted. The specific process flow is as follows: blank → rough turning → rough milling → aging → fine turning → fine milling.

 

CNC lathe is a kind of high-precision and high-efficiency automatic machine tool. The use of CNC lathe can improve processing efficiency and create more value. The emergence of CNC lathe has made enterprises get rid of the backward processing technology. The processing technology of the lathe is similar, and the processing technology of the CNC machine tool has the characteristics that other machine tools cannot match.

 

Rough milling: According to the analysis of precision ODM processing manufacturers, a margin of 1.5mm is reserved on the side and bottom of the cavity, and the process hole is pre-drilled at the hole position of φ12mm. Aging: Removal of material and processing stress. Finish turning: Finish turning the end face, the outer circle and boring the process hole φ6mm. It is required to complete the clamping in one time to ensure the coaxiality and lay a good foundation for the subsequent processing. Precision milling: to ensure the final requirements of the parts, is the focus of this article.

 

①Rough milling cavity rough machining mainly removes large margins and lays a good foundation for subsequent finishing. Therefore, when machining the cavity, choose a low-cost common digital control CNC machining milling machine. This process requires that the inner contour is machined according to the shown part structure drawing, the arc corner is R5mm, and the remaining finishing allowance is uniform, which is 1.5mm. And this process also needs to pre-process the positioning holes required for finishing at the φ12mm hole position.

 

②The high-speed machining technology of precision milling cavity is a manufacturing technology that has been applied in recent years. In high-speed cutting processing, due to the small cutting force, the machining deformation of the parts can be reduced, which is more suitable for thin-walled parts, and the chips are removed in a short time, most of the laser cutting heat is taken away by the chips, and the workpiece is thermally deformed Small, it helps to ensure the accuracy of the size and shape of the parts; high-speed machining can obtain higher surface quality, and the machining cycle is greatly shortened. Therefore, in combination with the characteristics of this type of thin-walled disc parts, high-speed machining is selected when finishing the cavity.

 

③Introduced by the precision CNC aluminum machining manufacturer, the positioning hole is processed by the center hole φ6mm and φ12mm hole as the positioning hole for the finishing of the part, so it must be machined in place before finishing the cavity.

Copyright notice: This article comes from https://www.pemprosesan.com/

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Tuesday, July 20, 2021

HLAA News (in this message: 2 new items)

HLAA News (in this message: 2 new items)

Link to Hearing Loss Association of America

Action Alert: Medicare Coverage of Hearing Aids

Posted: 20 Jul 2021 01:34 PM PDT

You may be aware that there is a movement afoot to expand Medicare to include hearing health care. That would mean for the first time, people who rely on Medicare to pay their medical bills would...

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Do You Believe Everything You Read on the Internet or See on TV?

Posted: 20 Jul 2021 10:00 AM PDT

Barbara Kelley Executive Director Hearing Loss Association of America. We have a response in our family when one of us shares a factoid suspect to truth. We reply sarcastically with, "It must be true...

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Wednesday, July 14, 2021

HLAA News: Rules are Long Overdue

HLAA News: Rules are Long Overdue

Link to Hearing Loss Association of America

Rules are Long Overdue

Posted: 14 Jul 2021 12:15 PM PDT

Lise Hamlin Director of Public Policy Hearing Loss Association of America President Joe Biden Issues Directive for Over-the-Counter Hearing Aids By Lise Hamlin President Joe Biden signed a sweeping...

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Friday, July 9, 2021

HLAA News: President Biden Directs HHS to Consider Issuing Proposed Rules within 120 Days for Allowing Hearing Aids to be Sold Over the Counter

HLAA News: President Biden Directs HHS to Consider Issuing Proposed Rules within 120 Days for Allowing Hearing Aids to be Sold Over the Counter

Link to Hearing Loss Association of America

President Biden Directs HHS to Consider Issuing Proposed Rules within 120 Days for Allowing Hearing Aids to be Sold Over the Counter

Posted: 09 Jul 2021 10:37 AM PDT

Today, U.S. President Biden issued an executive order that directs the U.S. Department of Health and Human Services (HHS) to consider issuing proposed rules within 120 days for allowing hearing aids...

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