News

Minimizing the Heat-Affected Zone During Metallographic Sectioning: Effects of Cooling, Feed Rate, and Cutting Wheel Selection

Sectioning is the first critical step in metallographic specimen preparation. The purpose of sectioning is not merely to reduce a material to an observable size, but to obtain a representative cross-section without altering its original microstructure. When excessive heat is generated during sectioning, the specimen surface may undergo tempering, rehardening, phase transformation, oxidation discoloration, plastic deformation, microcracking, or the development of residual stresses. These thermal effects and mechanical damage may persist through subsequent grinding and polishing processes, ultimately leading to misinterpretation of the material's original microstructure during microscopic examination.

Why Are Metallographic Specimens Reworked? Understanding the Real Reasons for Regrinding, Repolishing, and Re-Etching Through Process Variations

The purpose of metallographic analysis is to reveal the internal microstructure of a material in a reliable and reproducible manner for observation and interpretation. When the specimen surface contains scratches, smearing, deformation layers, edge rounding, contamination, under-etching, or over-etching, the microscopic image may no longer represent the material itself but instead reflect artifacts introduced during specimen preparation. Under such circumstances, specimen rework is often required.

[A Guide to Choosing Grinding Wheels] In-Depth Analysis of Grinding Wheel Materials, Grit Sizes, and Abrasive Properties

Cutting: The Key to Successful Metallographic Analysis...

2025 TiTE x IHT

Date: October 21–23, 2025
Venue: Taichung International Convention and Exhibition Center (Shuinan)

Automation Taipei 2025

Date: 20 – 23 AUG. 2025
Venue: Taipei Nangang Exhibition Center, Hall 1
Booth NO.: J1026

Inverted vs. Upright Metallurgical Microscopes: How Do They Differ from Regular Microscopes?

In the process of modern metal material analysis and quality inspection, metallurgical microscopes play an extremely critical role. The quality of metallographic sample preparation and microscopic observation directly affects the reliability of testing data, which in turn influences a company's judgment on product quality and process optimization.

What is a Metallurgical Microscope? Introduction to Working Principles and Common Applications

In the fields of material analysis and quality testing, metallurgical microscopes play an indispensable and vital role. As a professional metallographic equipment supplier in Taiwan, Nakazawa has been dedicated to providing high-quality metallographic sample preparation and testing solutions since its establishment in 1988, assisting customers in achieving precise and reliable metallographic testing results in product quality control and R&D analysis.

2025 Timtos

Date: 2025/03/03-2025/03/08
Venue: Nangang Exhibition Hall Hall 2
Booth number: P0219

Automation Taipei 2024

Date: 2024/08/21-2024/08/24
Venue: Nangang Exhibition Hall Hall 2 1F
Booth number: Q908

2024 Taiwan International Fastener Show

Date: 2024/06/05-2024/06/07
Venue: Kaohsiung Exhibition Center
Booth number: S1550

TNC-AS、TNC-ASL Automatic Metallographic Cutting Machine passed TS safety certification

2023 Taiwan International Tools & Hardware Expo

Date： Oct. 04-06, 2023
Venue：Taichung International Exhibition Center
Booth number：G35

112th Annual Digital Transformation and Energy Saving and Carbon Reduction Process Technology Seminar for the High Energy-Consumption Heat Treatment Industry

Thanks to Honorary Chairman Hong of Heat Treatment for hosting the seminar on heat treatment intelligence and energy saving. The heat treatment manufacturers shared their results and experiences during the meeting, which was very lively.

2023 Taiwan Robotics and Intelligent Automation Exhibition

Date: 2023/08/23-2023/08/26
Venue: 1st Floor, Hall 2, Taipei Nangang Exhibition Center
Booth Number: Q102, Q104, Q201 , Q203

2023 Taiwan International Fastener Show

Date：2023/05/03-2023/05/05
Venue：Kaohsiung Exhibition Center
Booth number：S2510

2022 Taiwan TIMTOS X TMTS

Date: 2022/02/21(Mon) - 02/26(Sat)
Venue: Taipei Nangang Exhibition Center, 1st Floor, Hall 2
Booth number: Q0104

2021 Taipei International Mould and Smart Molding Equipment Exhibition

Date: 2021/12/15 (Wednesday)-12/18 (Saturday)
Venue: Taipei Nangang Exhibition Center Hall 2
Booth number: S724

The Annual Meeting of the Society of Heat Treatment was held at National Taiwan Normal University on December 4

The Annual Meeting of the Society of Heat Treatment was held at National Taiwan Normal University on December 4, Taiwan Zhongze set up a booth at the venue, and Mr. Lu Zhenghua, Director of the Bureau of Industry of the Ministry of Economic Affairs, came and cheered on!

Zhongze Company and National Taiwan University Department of Materials Industry and University Cooperation

Nakazawa Company cooperates with the Department of Materials Science and Technology of National Taiwan University to conduct research and development on material pre-processing equipment and product quality improvement, and sponsor funds to repair the metallographic sample preparation room.

Taipei Int'l Mold & Die Industry Fair 2020

Date: 2020/8/19 (Wed)-8/22 (Sat)
Venue: Taipei Nangang Exhibition Hall, Hall 2
Booth No.: #Q723&Q725&Q624&Q625