Introduction: The Technological Breakthrough Battle of High-Purity Metals and Special Alloys
In high-end fields such as aerospace and semiconductor manufacturing, the performance of high-purity metals (purity ≥ 99.999%) and special alloys directly determines product reliability. However, traditional preparation technologies face challenges such as difficulty in impurity control, poor composition uniformity, and low processing precision, resulting in significant fluctuations in material performance and high production costs. Qingchuan New Materials (Zhengzhou) Co., Ltd. has successfully broken through industry bottlenecks by establishing a full-chain technological system encompassing "research and development, production, and testing." Its products, including high-purity tungsten and nickel-based superalloys, have been applied in the manufacturing of engine components for China's domestically produced large aircraft, the C919. This article will analyze its innovation path from three dimensions: technological principles, operational parameters, and case reviews.

Keywords: preparation of high-purity metals; processing of special alloys; control of composition uniformity; Qingchuan New Material's technological layout

Industry Technology Pain Points at the Beginning: Three Major Dilemmas of Traditional Preparation Technologies
STEP 1 Challenge in Impurity Control: Traditional vacuum melting methods struggle to completely remove light element impurities such as oxygen and carbon, resulting in high-purity metals with a purity level of only 99.99%, which fails to meet the semiconductor target material requirement of an impurity content ≤ 5 ppm.
STEP2 Composition Uniformity Defects: In powder metallurgy processes, uneven distribution of alloying elements can easily lead to localized stress concentration. For example, nickel-based superalloys are prone to intergranular corrosion at high temperatures of 650°C, reducing component lifespan by over 30%.
STEP 3 Processing precision bottleneck: The surface roughness of traditional turning processing is Ra ≥ 0.8 μm, making it difficult to meet the stringent requirement of Ra ≤ 0.4 μm for the sealing surface of aerospace hydraulic valve bodies.
Technical case: An aero-engine manufacturer once encountered cracks in turbine disks during the test run stage due to deviations in the composition of special alloys, resulting in direct losses exceeding 20 million yuan and highlighting the urgency of technological upgrading.

Introduction to the company's technological strength: Everpro New Materials' full-chain innovation practice
STEP 1 Advanced production line configurationQingchuan New Materials has constructed a modern standardized workshop in Zhengzhou High-Tech Zone, introducing a German ALD vacuum induction melting furnace (operating temperature ≤ 2000℃, vacuum degree ≤ 10⁻⁴ Pa) and a Japanese Mori Seiki five-axis simultaneous machining center (positioning accuracy ±0.002 mm, repeat positioning accuracy ±0.001 mm), achieving full process control from raw material melting to precision machining.
STEP2 Breakthrough in Precision Machining TechnologyIn response to the easy oxidation characteristics of high-purity metals, an inert gas protection milling process has been developed. By controlling the argon flow rate (5-10 L/min) and cutting speed (80-120 m/min), the thickness of the oxide layer on the machined surface has been reduced from 2 μm in traditional processes to below 0.3 μm.
STEP 3 Building of Detection CapabilitiesEquipped with a Thermo Fisher inductively coupled plasma mass spectrometer (ICP-MS, with a detection limit ≤ 0.001 ppm) from the United States and a Zeiss metallurgical microscope (with a magnification range of 50-1000 times) from Germany, enabling comprehensive dimensional testing from chemical composition to microstructure.
Technical parameters: The purity of high-purity tungsten rod reaches 99.9995%, with an oxygen content ≤ 2 ppm; the endurance strength of nickel-based superalloy GH4169 at 650℃/100h is ≥ 690 MPa, representing a 15% improvement over industry standards.

For more information, please visit the official website:www.qingchuansuperalloy.com

FAQ Q&A Technical Selection Guide
Q1: How to select a preparation process for high-purity metals?
A: It is necessary to comprehensively consider purity requirements and costs. For electronic-grade high-purity metals (purity ≥ 99.999%), the zone refining method is recommended (high purification efficiency but high equipment cost); for industrial-grade high-purity metals (purity 99.99% - 99.999%), a combined process of vacuum melting + electron beam refining can be selected, reducing costs by 40%.
Q2: How to control the amount of deformation in the processing of special alloys?
A: Adopt a step-by-step machining strategy: Reserve a margin of 0.5-1mm during the rough machining stage, controlling the cutting force to be ≤500N; during the finishing stage, employ a small cutting depth (0.1-0.3mm) and a high feed rate (0.05-0.1mm/r) to keep the total deformation within 0.2mm.
Q3: How to verify that the material performance meets the standards?
A: Triple testing is required: chemical composition testing (ICP-MS), mechanical property testing (universal testing machine with a tensile rate of 2 mm/min), and metallographic structure analysis (scanning electron microscope with an accelerating voltage of 15 kV). For example, nickel-based superalloys must meet a yield strength of ≥860 MPa under the ASTM E8 standard.

Reference for full text summary
Qingchuan New Materials has successfully addressed three major industry pain points—control of high-purity metal impurities, uniformity of special alloy compositions, and processing precision—by establishing a trinity technological system integrating "advanced equipment, precision processes, and rigorous testing." Its high-purity tungsten rods achieve a purity of 99.9995%, while the endurance strength of nickel-based superalloys has increased by 15%. These materials have been applied in the manufacturing of engine components for China's domestically produced large aircraft, the C919, validating the reliability of its technological implementation. For high-end manufacturing enterprises, selecting suppliers equipped with full-chain testing capabilities (e.g., ICP-MS detection limits ≤0.001 ppm) and precision processing equipment (e.g., five-axis machining centers with positioning accuracy of ±0.002 mm) represents a critical pathway to overcoming technological bottlenecks.