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      • Custom ASME B31.3 Piping Systems
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      • Precision Mechanical / Electrical Assemblies
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    • MLI - Multi Layer Insulation
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Custom Vacuum Chamber Articles


Top 20 Issues To Consider So That Your Aluminum Welding Project Will Run Smoothly​

​Welding aluminum can add manufacturing time and cost in addition to causing problems with holding vacuum if not fabricated properly.  We have taken some time to go through our top 10 list of issues related to welding Aluminum.  This is our idea of a prioritized list of variables that need to be taken into consideration in order to consistently produce high quality Aluminum UHV chambers..

Explore the Advantages of Aluminum vs. Stainless Steel for the Manufacturing of Vacuum Chambers

Material advantages of stainless steel over aluminum have been neutralized, Aluminum should be considered first choice for many common high vacuum applications.

Cleaning Aluminum for Vacuum Applications

Methods used to clean aluminum have evolved, as the use of aluminum for the construction of vacuum and ultra-high vacuum systems has become more widespread.

Sealing Options for Aluminum Vacuum Chambers

Achieving leak tight permanent welded joints in aluminum is routine when performed by competent, experienced welders following stringent procedures.

​Manufacturing a Custom Titanium Vacuum Chamber

​Meyer Tool is completing a complex, custom titanium ultra-high pressure/vacuum chamber for a well-known research institution. Implementing our Reduce Project Risk Process, engineers at Meyer Tool provided manufacturability advice in the design phase and our manufacturing team worked together to execute complex, critical manufacturing operations.

Aluminum Vacuum Chambers: “Hog Outs” versus Welding

Choosing best fabrication method for a vacuum chamber is dependent upon a number of interrelated factors and is not obvious except in simple configurations.

Why is Helium Used in Vacuum Leak Detection?

Helium is used in vacuum leak detection because it is safe, has small molecules, comprises a very small part of the atmosphere, & is very distinguishable.

Helium Leak Detection: What is a calibrated leak?

Calibrated leaks are used for calibrating helium leak detectors, the most common type being the reservoir type.

Vacuum Chamber Design: What is a Virtual Leak?

A virtual leak is a trapped volume of gas connected to the vacuum side of a chamber that will not be detected in a normal helium leak testing cycle.

Vacuum Chamber Design: Weld Joint Design

​Design and construction of welded joints to ensure proper performance of vacuum system; discusses and shows practices for proper and improper weld joints.

Plastics in Vacuum Applications

Plastics are generally avoided in high vacuum applications due to relatively high outgassing rate, but sometimes low cost or ease of use is an advantage.

Water Vapor in Vacuum Systems

​Walls of a vacuum chamber become coated with layers of adsorped water when exposed to air. Removing the water vapor is critical in reaching a good vacuum.

Leak Test Procedures and Specifications

Leak testing using a helium mass spectrometer leak detector is a critical quality assurance measure when building cryogenic equipment & vacuum vessels.

How to Select O-Ring Materials for Vacuum Applications

O-rings manufactured from proper materials such as nitrile, fluorocarbon or EDPM are critical when constructing cryogenic appliances for vacuum applications

Aluminum Anodizing and Vacuum Chambers

​Discussion of the process of anodizing aluminum in the fabrication of vacuum vessels, and how it can affect a vacuum chamber.

Using Castings in Vacuum Service

Advances in casting technology have resulted in the availability of centrifugally cast materials and aluminum sand cast materials for vacuum applications.

Measuring Pressure in a Vacuum System

Important factors in selecting correct vacuum gauge: range of pressures to be measured, nature of background gas, environmental factors, accuracy and cost.

Dry Vacuum Pumps

The semiconductor industry, with its need for a high degree of cleanliness, has been a significant driving factor in the development of dry vacuum pumps.

Welding Thin Walled Components to Thicker Sections

​How a weld relief groove can help you achieve greater success when welding a thin walled material to a component of significantly greater thickness.

Specifying Nozzle Ports on Cylindrical Vessels

​This article suggests a simple standard method of specifying the location and tolerance of nozzle ports on cylindrical vacuum or pressure vessels.

Proper Torque for Conflat Flange Bolts

Proper methods for tightening Conflat flange bolts to the correct torque and how friction comes into play when following manufacturer specifications.

Reducing Hydrogen Outgassing in Stainless Steel Vacuum Vessels

Investigating various methods to reduce hydrogen outgassing when constructing a stainless steel vacuum vessel and interpreting the results.

Brazed Joints at the Vacuum Boundary

This introductory article discusses some fundamentals of brazing dissimilar metals to form a vacuum boundary at a joint in a chamber or assembly.

Diffusion Pumps

The cost & reliability advantages of using a diffusion pump connected to a high vacuum system include being vibration free & immune to the effects of magnetic fields.

Measuring Outgassing Rates in High and Ultra-High Vacuum Applications

A discussion on the formulas, methods and procedures used in measuring the outgassing rate in high & ultra high vacuum (UHV) applications.

Pressure Relief for Vacuum Chambers

Discussion of various methods of installing pressure relief valves on vacuum chambers in accordance with 10 CFR 851 and Department of Energy guidelines.

Meyer Tool Builds on a Core Competence

Meyer Tool hosted three days of outside training in “Basic Vacuum Practice” and “Leak Rate Test and Measurement” during the first week of November 2013.

Comparing Almeco 18 vs. Brulin 815GD for UHV Component Ultrasonic Cleaning

A comparison of the benefits of using a phosphoric acid etch prior to Brulin 815GD vs. Almeco 18 (Bonderite-C-AK18) process for ultrasonic cleaning.

Selecting a Braze Filler Metal

General guidelines for selecting the correct braze filler metal for a particular brazing operation.

Vacuum Technology – Three Useful Terms Explained

Vacuum systems are used in many industrial and research applications, such as the manufacture of semiconductors used in electronic devices, and to provide the insulating vacuum in cryogenic systems that minimizes the incursion of thermal energy from external sources.

VACUUM TECHNOLOGY – Material Choices Based on Vacuum Range

this article presents some general information regarding materials used in vacuum technology based on the vacuum range at which the system will be operated.

Understanding Surface Finish and Surface Texture

Effectively communicating the finish & surface requirements for a project from the designer to the manufacturer is critical to ensuring the finished product meets the desired performance criteria.

How a CF Knife-Edge Seal Works

​CF (Conflat) knife edge flanges are the most common type of dismountable flange used in ultra-high vacuum in ranges down to 10-13 torr.

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