The third Changsha International Construction Machinery Exhibition was successfully opened in Changsha International Convention and Exhibition Center on May 12.。There are 1500 enterprises participating in the exhibition.、More than 20,000 exhibits were unveiled.，The scale of the exhibition has set a record.。Bo Yun Dongfang“Innovation achieves dreams”As the theme, products such as extra-coarse cemented carbide for mining appeared in the exhibition again.（Booth number：E4-16C），Committed to providing construction machinery customers“Iron teeth, steel teeth”，And enhance the core competitiveness of customers in the global market.。 

In recent years，New technology、New materials、New construction method、Innovative applications such as new energy are advancing rapidly.，Continuously promote the iteration of global construction machinery product updates，High-end、Intelligence and greening have become an important direction for the future development of construction machinery.。This exhibition，Boyun Dongfang High Performance Cemented Carbide“Technological innovation”Products such as rotary pick、Shield cutter head、Crushing studs and road milling teeth appeared at Changsha International Construction Machinery Exhibition，The purpose is to fully display the core products in the construction machinery industry.、Technological innovation and enterprise strength，Make the mining cemented carbide business sector fully integrated with the market，Greatly enhance brand awareness in the industry and expand the global market。 

“Technological innovation”It has always been one of the core competitive advantages of Boyun Oriental.。 Boyun Oriental can meet different needs and working conditions of customers.，By working with the customer“Collaborative innovation”Provide professional solutions for high-performance extra-coarse cemented carbide for mining。Boyun Dongfang extra-coarse cemented carbide products are widely used in shield under extreme working conditions.、Mining、Engineering、Stamping die、Cold heading die、Roller and other industries。

 Rotary drilling rig is a kind of construction machinery for pore-forming operation in building foundation engineering.，Its working conditions include soil layer、Pebble layer、Frozen soil layer、Sandstone formation、Highly weathered rock layer、Geological layers such as moderately weathered rock layer and slightly weathered rock layer，In the cast-in-place pile、Diaphragm wall、It has been widely used in foundation reinforcement and other foundation construction.。Bo Yun Dong FangGThe 806 pick is this time.CICEEGrandly launched at the exhibition“Extra coarse grained cemented carbide”New products——Low-cobalt super-coarse crystal hard alloy，Used in the drilling tool of rotary drilling rig。

Boyun Oriental Exhibition Area：High performanceG806 Pick Customer Consultation

GThe 806 pick has good high temperature red hardness and thermal fatigue crack resistance.，High-performance cutting pick pair 80 prepared by using the materialMPaRotary excavation construction of above slightly weathered hard rock，And that rock break degree is high、Long service life。This product is Boyun Dongfang United Haoquan Machinery.“Collaborative innovation”，Through cooperation with Central South University“Production, teaching and research”Technological innovation advantages of deep integration，It is an international leading pick for domestic construction machinery giants such as Xugong Machinery and Sany Heavy Industry.，G806WCThe grain size exceeds 8μm，CoThe content is 6%Extra coarse grained cemented carbide，Compared with foreign countries in the construction of secant piles for foundation pit support of Liuxiandong subway station in ShenzhenWCThe grain size is 6μm，CoThe content is 8.5%Cemented carbide pick，G806 extra-coarse cemented carbide picks with compressive strength of 80MPaIn hard rock drilling.，Drilling efficiency increased by 2 percent.Twice，Fast rock breaking speed，Higher wear resistance and longer service life，It is the best choice of cemented carbide for rotary excavation engineering.。 

Use、Characteristic：

Use：It is mainly suitable for hard rock formation.；Uch as granite、Basalt and other complex strata。

Characteristic：WCThe average grain size is 8μm，CoThe content is 6%。 

Features of Boyun Dongfang Extra Coarse Cemented Carbide：

Boyun Dongfang has strong innovation and development strength in high strength and toughness extra-coarse cemented carbide.，The grain size of the cemented carbide tungsten carbide can reach 12μm，The overall preparation technology has reached the international advanced level.，In which autoactivation is reduce-High temperature carbonization technology and prestress control technology have reached the international leading level.。The product has been successfully applied to the largest diameter shield machine.“Jinghua”、China's deepest undersea tunnel shield machine“Shenjiang No.1”，It is also exported to Russia and India with the large-size shield machine of China Railway Construction Heavy Industry.“The Belt and Road”Country，Successfully replace the products of international leading enterprises，Got Xugong Group、Sunward intelligence、Highly recognized by leading enterprises in CITIC Heavy Industries and other industries，It promotes the autonomy of key materials and core components、Localization，To achieve“The most important weapon of the country”Leading the world provides strong chain support.。 

The overall technology of Boyun Dongfang ultra-coarse cemented carbide has reached the international advanced level.：“Key Technologies for Deep Development and Application of Refractory Tungsten Resources”Won the first prize of National Science and Technology Progress Award in 2011，《Key Technology and Application of Design and Manufacture of Tunneling Machine Cutterhead and Extra Coarse Grain Cemented Carbide Cutting Tool》Won the first prize of China Nonferrous Metals Industry Science and Technology in 2019、《Materials and key technologies of high performance cutterhead of large roadheader in complex strata》Won the first prize of Sichuan Science and Technology Progress in 2021。

Related cases——Extra coarse grained cemented carbide：

Case 1：Pick case

1) Application equipment：Domestic famous brand rotary excavatorSWDM36H，Configuration of drilling tool is 1.2m Cutting bit barrel drill。Process introduction：The main construction content of Liuxiandong construction site in Shenzhen is the secant pile for the foundation pit support of the subway station，The depth of the pile position hole is about 22-25 meters，In the process of meat pile drilling，Bite section is drilled with pick barrel drill and bucket drill，The stratum below the occlusion section is highly weathered.-Slightly weathered migmatitic granite，The strength changes greatly.，Strong weathered stratum with low stratum strength，Cutting bit barrel drill and cutting bit bucket drill are used for drilling construction.，When drilling into hard, moderately to slightly weathered rock，The rotary drill is used to replace the roller drill when the rock strength is 80MPaRotary excavation operation is carried out in the hard rock stratum.。The results show that，The extra-coarse crystal pick in the east of Boyun has the characteristics of fast rock penetration,、Long service life，It has advantages in work efficiency and drill tooth loss。  

Case II：Domestic maximum diameter“Jinghua”Shield cutter head of shield machine

Boyun Dongfang Shield Cutter Head Applied to the Largest Diameter Made in China“Jinghua”Shield machine 

Domestic maximum diameter“Jinghua”Application of Shield Machine in Reconstruction Project of East Sixth Ring Road in Beijing，The surrounding environment and geological conditions of the whole construction of the project are very complex.，It is necessary to pass through multiple difficult risk sources.。So，All aspects of the design and manufacture of the shield machine will be crucial.，Through collaborative innovation with customers，Bo Yun Dongfang is this station.“The most important weapon of the country”Put it on“Iron teeth, steel teeth”——Ultra-coarse crystal hard alloy shield tool bit，If there is no high standard、High-efficiency hard alloy shield cutter head，Such a complex and long-term working condition will be difficult to move.。The product is customized according to the special needs of customers.，Work efficiency is greatly improved.。

Case III：The deepest undersea tunnel in China“Shenjiang No.1”Shield cutter head of shield machine 

Deepest subsea tunnel“Shenjiang No.1”Shield machine

The deepest undersea tunnel in China“Shenjiang No.1”Application of Shield Machine in Zhujiangkou Tunnel Project of Shenzhen-Jiangmen Railway，“Shenjiang No.1”The total length of the crossing section is 3590 meters.，Long distance downhill tunneling of the whole line，Underpass the Pearl River estuary，The engineering geological conditions are extremely complex.，Collect soft soil、Hard rock、Uneven hardness、The bedrock bulges into a whole.，Passing through multiple fracture zones，The maximum buried depth is 106 meters.，High water pressure construction area 110m，It is the deepest buried depth in China、Underwater shield tunnel with the highest water pressure。Boyun Oriental innovates through collaboration with customers，Customized development for customers suitable for“The most important weapon of the country”The head of the knife，Work efficiency is greatly improved.。

Case IV：Boyun Oriental was awarded CITIC Heavy Industries“Excellent Supplier in 2022”

In the field of mine and cement rock crushing，Boyun Oriental has cooperated with many benchmarking enterprises of high pressure roller mill preparation in the world for many years.，Rich experience in innovation and R & D，Through the customer's“Collaborative innovation”，Provide customers with long life carbide stud solution，Greatly improve the service life of high pressure grinding roll。On the basis of successful cases of foreign high-pressure roller mills, Boyun Dongfang，Deep cooperation with CITIC Heavy Industries, a leading mining equipment company，High Pressure Grinding Roller Assembling Long Life Column Nails for Customers in Energy Saving and Consumption Reduction、Environmental protection、Operate efficiently、It has significant advantages in reducing operating costs.，Obtained CITIC Heavy Industries“Excellent Supplier in 2022”，Helping China's High Pressure Grinding Roll to Create World-class。

CITIC Heavy Industries“Excellent Supplier in 2022”

Boyun Dongfang Long-life Cemented Carbide Stud

Global Business Layout of Boyun Oriental：

The extra-coarse cemented carbide products exhibited by Boyun Dongfang are sold well in all regions of the country.，And exported to the world such as the United States.、Brazil、 Finland 、Australia and other countries and regions，Boyun Oriental has been adhering to“Innovation achieves dreams”Brand concept，Make professional products with ingenuity，Build a global high-end brand，To create greater value for Chinese construction machinery and even global customers。  

The booth number of Boyun Oriental：E4-16C

Milestone event：

The total investment of Boyun Oriental is 700 million yuan.《Industrialization Project of Lugu Base for High-efficiency Precision Cemented Carbide Tool and Die and High-strength and Toughness Extra Coarse Grain Cemented Carbide Tunneling Tool》Located in Lugu, High-tech Zone, Changsha City，Total floor area 115.45 acres。The project will build a cemented carbide production line with an annual output of 2000 tons.。The completion of this project can provide a stable and reliable industrialization platform for Boyun Dongfang in the field of cemented carbide.，It is conducive to creating value for customers to a greater extent with the company's technical achievements in cemented carbide accumulated over the years.。

Boyun Dongfang High Performance Cemented Carbide Lugu Industrialization Project

For 29 years，Boyun Oriental has been committed to creating a global high-end brand image in the cemented carbide industry.，Stick to it“Innovation achieves dreams”Brand concept，Through core competitive“Hard core innovation technology”，Further improve the import substitution rate of high-end cemented carbide products，Helping China's Cemented Carbide Industry to Develop with High Quality，For the Chinese nation to become the world“A manufacturing power”Dedicate your strength。