How to Purchase Mo1 Welded Molybdenum Boat?
Core parameter selection logic
1. Purity criteria
The purity of the Mo1 molybdenum boat directly affects the service life and anti-oxidation ability. The industrial-grade purity is usually 99.95%, and some high-end application scenarios require the purchase of 99.99% ultra-high-purity products. It is recommended to choose according to the temperature range of the vacuum furnace:
Conventional process below 1800 °C: standard 99.95% purity is required
Special process above 2000 °C: 99.99% ultra-high purity products need to be customized
2. Dimensional accuracy
The dimensional tolerance of the welded molybdenum boat determines the loading accuracy and thermal field distribution. When choosing, you need to focus on three key indicators:
Length tolerance: ± 0. 2mm to ensure accurate matching with furnace cavity
Uniformity of wall thickness: the difference in wall thickness does not exceed 0.1 mm to ensure the consistency of heat conduction
Corner process: rounded corner transition design avoids cracking risk caused by stress concentration
3. Welding process
High Mo1 molybdenum boat adopts plasma beam welding technology, and the weld strength can reach more than 90% of the matrix material. When observing the appearance of welds, qualified products shall have:
No obvious pores and cracks
Transition between weld and base metal
Surface roughness Ra ≤ 1.6 μm
Customization capabilities
A good supplier should be able to provide fast order, support:
Design of Molybdenum Boat with Special Shape
surface coating treatment
batch flexible production
Photovoltaic is another major growth pole of molybdenum demand. The popularization of N-type battery technologies such as TOPCon and HJT around the world has driven the explosion of demand for high-purity molybdenum targets. N-type cells have high efficiency and low attenuation, and have become the mainstream of the industry. High-purity molybdenum targets directly determine their photoelectric conversion efficiency and stability, which can improve conductivity, match silicon substrates, and avoid thermal stress cracks.
With the large-scale development of the global photovoltaic industry, the Asia-Pacific accounts for more than 80% of the industrial chain, the demand for installed capacity in Europe, America and Southeast Asia is increasing, and many countries are accelerating the layout of production capacity. According to TrendForce's forecast, by the end of 2025, the global TOPCon battery production capacity will account for 83%, directly driving the demand for molybdenum targets. Each GW N-type battery consumes about 8 tons of molybdenum targets, and the consumption of HJT batteries is even higher; It is estimated that the total global demand for photovoltaic molybdenum will exceed 12,000 tons in 2026, a year-on-year increase of 60%.
Cost control strategy
1. Bulk procurement optimization
Establish a hierarchical procurement plan according to the annual demand:
Single purchase of more than 100 pieces: usually 10% off the price
Entering into an annual framework agreement: lock in the risk of price fluctuations
2. Value-for-money balance
Refuse to simply pursue low prices, and recommend a comprehensive evaluation:
Cost per unit life cycle (not single purchase price)
Supplier's after-sales service response speed
Conclusion
The selection decision of Mo1 welding molybdenum boat is essentially an investment in the stability of the production process. By clarifying the evaluation criteria of core parameters and establishing a scientific supplier screening system, procurement decision makers can achieve the optimal balance of costs while ensuring products. In the field of high-end manufacturing, where technology iteration is accelerating, accurate material selection is not only the key to production cost control but also an important manifestation of the technological competitiveness of enterprises.
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Ava
