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Tantalum niobium processing materials and products

Tantalum niobium processing materials: Tantalum niobium processing materials are produced by means of powder metallurgy. Tantalum niobium and its alloy powders are mixed and cold-pressed, then placed at a temperature lower than the melting point to make it undergo gas phase migration, surface diffusion migration, bulk diffusion and crystal interface diffusion, so as to obtain the compact sintered metal billet that meets the requirements. Then the tantalum niobium wire is produced by pressure processing methods such as mold rolling, rotary forging and drawing, the tantalum niobium sheet is produced by pressure processing method of flat roll rolling, and the tantalum niobium tube is produced by pressure processing method of pipe rolling mill.

In the process of cold working, the work hardening is eliminated by secondary sintering or secondary vertical melting, so that the void is fused. Anodic oxidation was used to improve the drawing lubrication condition. Recovery of plasticity by intermediate annealing or finished annealing to recrystallize the processed material.

The principle technological process of tantalum wire, niobium wire and tantalum niobium wire is as follows: powder → mixing → static forming → one vertical melting → forging → two vertical melting → sawing → mold rolling → intermediate annealing → rotary forging → drawing → pickling → purification → annealing → high temperature sintering → inspection → finished tantalum wire (or niobium wire or tantalum niobium wire).

The principle technological process of tantalum bar and niobium bar is to obtain tantalum bar or niobium bar by polishing after rotating forging sequence of the aforementioned process.

The principle process flow of tantalum sheet and niobium sheet is: powder → mixing → static pressure forming → primary vertical melting → sawing → forging → pickling → high temperature sintering → cold rolling billet → pickling → annealing → rough rolling → cleaning, Shaping→finishing rolling → finishing → pickling → annealing → inspection → Tantalum sheet (or niobium sheet).

The principle technological process of tantalum tube and niobium tube is as follows. Powder → mixture → static pressing → vertical melting → die forging → round aluminum hole → cleaning → rolling forging → pickling → annealing → fine rolling → break → pickling → annealing → inspection → niobium tube (or niobium zirconium tube).

The main technical and economic indicators are: The direct yield of tantalum wire and niobium wire is 74% and the total yield is 87%. The direct yield of tantalum wafer is 65%, the total yield is 95% and the qualified rate is 98%. The direct yield of niobium sheet is 68% and the total yield is 87%. The direct yield of niobium and niobium zirconium tubes is 42% and the total yield is 87%.

Tantalum niobium products: tantalum niobium products are processed by means of punching, molding, riveting welding and other machining tools, such as molds, punch presses and hydraulic presses. Among them, the tantalum spinneret head blank is pressed and formed by the die. The tantalum cover is pressed and formed on the punch press twice by the mould, the tantalum crucible is pressed and formed by the mould for many times, the heater and the reflector are made by hand tools, and made by argon arc welding. The main technical and economic indexes are: tantalum spinner head, tantalum cap for capacitors, direct yield of tantalum crucible 45%, total yield 93%, direct yield of tantalum heater and tantalum reflector 48%, total yield 93%.