A powder loading method for beryllium material forming blanks for cetr reactor

Abstract

The invention discloses a powder filling method for beryllium material forming blanks for CETR reactor, comprising: step 1, calculating the required filling amount of beryllium powder; step 2, preparing the material, loading it into a feeder of a closed feeding device, and sealing it; Step 3, start the first vibration motor, drive the feeder to vibrate and feed the beryllium powder into the package that is sealed with the feeder; Step 4, start the second vibration motor, adjust the vibration frequency of the vibration platform, and correct the The beryllium powder in the package is vibrated; when the beryllium powder loading is 90-100%, the vibration frequency is adjusted between 0-80Hz; when the beryllium powder loading is 70-90%, the vibration frequency is adjusted between 80-80Hz Between 120Hz; when the beryllium powder loading weight is 0-70%, adjust the vibration frequency between 120-180Hz. The invention ensures the tap density and uniformity of the beryllium powder filled in the envelope, can meet the performance requirements of the compact, and has high powder filling efficiency.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metal metallurgy, and in particular relates to a powder loading method for beryllium material forming blanks for CETR reactors. Background technique [0002] Beryllium is a rare metal with remarkable comprehensive physical, thermal and mechanical properties, which is widely used in aerospace and other fields. Both beryllium and beryllium compounds are toxic. The toxicity of beryllium is mainly the infection of beryllium to respiratory organs and the dermatitis caused by direct contact with the skin. In the manufacturing process of beryllium products, it is necessary to strengthen the protection of beryllium. In the manufacturing and processing technology of metal materials, powder metallurgy is one of the important manufacturing methods. Powder metallurgy is a technology that transforms powder materials with a certain particle size, shape and bulk density into materials with high strength, hi...

AI Technical Summary

Problems solved by technology

Beryllium powder has poor fluidity and low bulk density, and the tap density of the powder will directly affect the quality of the compact, especially for expensive and toxic powders such as beryllium powder. After the powder is filled into the bag, it is hand-tamped, so there are deficiencies: 1. Fill the beryllium powder into the bag and tamp it to a certain filling density. The filling density of the powder cannot meet the performance requirements of the compact; 2. The fluidity of the beryllium powder is poor, resulting in poor uniformity of the powder after compaction, because the size uniformity and straightness of the compact depend on the uniformity of the powder filling, which affects the size of the compact Uniformity and straightness; 3. The tamping process is a non-airtight operation, and inclusions are easy to occur in the powder, which will affect the performance and material stability of the formed blank

In particular, the maximum size of beryllium products for Φ300~700mmCETR reactors reaches 700mm, which requires a large amount of raw material powder, and the powder filling time is too long and the production efficiency is low

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