1 This guide is under the jurisdiction of ASTM Committee B10 on Reactive and. Refractory Metals and Alloys and is the direct responsibility of Subcommittee. ASTM B is the standard guide for descaling and cleaning titanium and titanium alloy surfaces. This guide covers a cleaning and descaling procedure for the. ASTM B Standard Guide for Descaling and Cleaning Titanium and Titanium Alloy Surfaces. Available for Subscriptions. Content Provider ASTM.
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This guide covers a cleaning and descaling procedure useful to producers, users, and fabricators of titanium and titanium alloys for the removal of ordinary shop soils, oxides, and scales resulting from heat treatment operations and foreign substances present as surface contaminants. For chemically milled materials, salt bath conditioning may be required to remove the oxygen-contaminated layer.
Printable Page Email This Page. ASTM B has provided three mechanical descaling methods including sandblasting, shot blasting, and vapor blasting. The removal of soil shall be the first step prior to zstm further process. Recommended post treatment of shot or abrasive blasted titanium surfaces may include acid pickling to ensure complete removal of surface contaminants.
Visual inspection, hydrogen absorption monitoring during the cleaning process, and cleanliness evaluation by chemical milling test are discussed. Advanced Electropolishing Technologies Railroad Ct.
It is usually followed by molten alkaline conditioning and acid pickling process. Our passivation processes remove iron and other surface contaminants from stainless steel surfaces. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
ASTM B is the standard guide for descaling and cleaning titanium and titanium alloy surfaces. Mechanical descaling methods such as sandblasting, shot blasting, and vapor blasting may be used to remove hot work scales and lubricants from titanium surfaces. Link to Active This link will always route to the current Active version of the standard.
We restore the component to its original mill condition. About Us Contact Us Sitemap.
Corrosion resistance of some specific materials can be enhanced with our proprietary light electropolishing method too. All our chemical passivation treatments plus preliminary cleaning and descaling processes comply to ASTM standards. Similarly, welded or brazed parts are not suited for passivation, as passivation cannot remove scale and discoloration that occurs on the “heat affected zones.
Titanium Strip, Foil and Coil. Our passivation processes comply with any industry or company-specific chemical passivation standards, including ASTM specifications. Our pickling operations involve softening the scale of acids before complete removal.
Heavy contaminates or oxides formed by heat-treating and other high temperature operations are removed completely through pickling. ASTM does not give any warranty express or aetm or make any representation that the contents of this abstract are accurate, complete or up to date.
ASTM B600 – 11(2017)
The blasting procedure will remove hot work scales and lubricants from titanium surfaces. There are some restrictions to the types of aatm being passivated. AET has some of the largest pickling tanks in the industry to perform superior cleaning operations on huge welded structures. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application.
They may have very negative effects on the corrosion resistance, stability and quality of the finished titanium products, thus, shall be removed prior to chemical milling, joining weldingplating, and fabrication. Historical Version s – view previous versions of standard. Spark discharge and subsequent pitting shall be avoided in electrolytic systems.
Stainless steel substrates with low levels of chromium and nickel increase the risk of flask attack, weaken the base material, as well as damage the part during passivation. How to Evaluate Titanium Welding Visually? This abstract is a brief summary of the referenced standard. It is recommended that the materials shall be subjected to soil removal prior to heat treatment or application of acid treatment.
ASTM B – Revision (Reapproved )
This guide covers a cleaning and descaling procedure for the removal of ordinary shop soils, oxides, and scales from the surface of titanium or titanium alloy surface. Acid etching treatment may be required following mechanical abrading or chemical conditioning of materials to completely clean the surface.
It is the responsibility of the user of this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. The sand selection, roughening of exposed surfaces, removal of embedded steel blasting particles, and residual stresses are all discussed. Apart from forming a corrosion resistant layer over the substrate, these chemical cleaning processes also remove material contamination that may occur in machining operations.
The soils, oxides and scales are resulting from heat treatment operations, manufacturing processes, or foreign substances present as surface contaminants.