Carbon Steel Forging Parts Casting

• Customization: Available
• Casting Method: Lost Wax Investment Casting
• Process: Lost Wax Investment Casting
• Model NO.: runner
• Molding Technics: Gravity Casting
• Application: Railway
• Material: Cast Steel
• Surface Preparation: Shot Blast+Clean by Ultrasonic Cleaning Machine
• Surface Roughness: Ra12.5
• Machining Tolerance: +/-0.01mm
• Standard: ASTM. AISI. DIN. BS. JIS. NF. as. AAR
• Certification: ISO 9001:2008, Ts16949/ISO14001/TUV
• Heat Treatment: Quench and Temper by 2 Set Mesh Belt Furnaces
• Machining Facility: 20 Machining Centers+50 Nc Machines
• Inspection: Mt/Ut/Rt/100% Visual+100% Gage/CMM
• Dimensions: OEM Customized/Customer′s Drawing
• Tolerance: as Drawing
• Transport Package: Plywood Case or Iron Pallet Packing
• Specification: precision casting
• Trademark: LX
• Origin: Ningbo, Zhejiang, China
• HS Code: 87081000
• Production Capacity: 20000 Tons/Year

Product Description

 

Carbon Steel Forging Parts Casting

Company Profile

 

LONGXING CASTING is a leading and globally recognized brand for complex and high-tech castings in the area of automobile, rail, construction equipment, material handling equipment and agricultural machinery.

Steadfast devoting to the field of precision casting and machining for 30 years and with strong engineering capabilities, complete quality assurance system and advanced management system, and deep industry expertise, our world class foundry provides these global industry leaders and medium-to-high end western customers with the highest quality products, services and solutions. 

In response to diversified needs of global customers, longxing group is established to offer overall solutions and one-stop services. Relying on powerful and matchless machining finish capabilities, our company expand the product lines and is committed to manufacturing and supplying iron and steel castings made by various casting methods, forgings and profile machined parts. 

Longxing also introduce in house production lines for cutting plate & sheet metal, welding, surface treatment, assembly to deliver high-value added complex assemblies. Longxing group is emerging as a leading metal forming and processing manufacturer that possesses solid comprehensive strength and unique business model.

 

1. OPERATING STRUCTURE

• Five factories
• 80,000 square meters
• Each factory has an independent dedicated management team experienced with their respective processes. 
• The corporate management board oversee and coordinate the division operations.

 

 

Ningbo Fenghua Huawei Investment Casting Co.,Ltd	Casting
Ningbo Qianhao Machinery Co.,Ltd	Cutting Plate & Sheet Metal
Ningbo Qianhao Metal Product Co.,Ltd	Machining & Welding
Ningbo Yinzhou Longxing Machinery Manufacturing Factory	Corporate Headquarter
Ningbo Qianhao Industry Co.,Ltd	Under Construction

2. FOUNDRY OVERVIEW---Huawei Foundry

• Established in 2005, 26,600 SM under roof, 245+ employees,Annual capacity 20,000 tons. 
• Utilize advanced lost wax & lost foam & shell moulding casting processes.
• Equipped with modern energy saving and environmental friendly production lines. 
• Automatic and semi-automatic wax and shell making, pouring, heat treating equipment.

3. SHEET METAL OVERVIEW---Qianhao Machinery

• Established 2022, 4,700 SM under roof. 
• Plate cutting & sheet metal. 
• 1 laser cutting machine,2 flame & plasma cutting machine,CNC bending machine,Hydraulic press machine. 

4. MACHINING OVERVIEW---Qianhao Metal

Established in 2009 13,500 SM under roof 215+ employees Advanced high and CNC equipment        50+ vertical and horizontal machining centers        Some abroad brand equipment - Doosan        80+ CNC machines (lathe, milling, drilling )        80+ additional supporting equipment        5  welding robots

Product Offering:      Machined profiles( rods, tubes etc.)      Machined steel castings      Machined stainless steel castings       Machined iron castings      Machined aluminum castings      Machined forgings      Machined cutting plates and sheet metal      Welded parts      Assembly parts

5. HEADQUARTER OVERVIEW---Longxing Machinery

• Established in 1993. 
• 6,000 SM under roof. 
• Corporate headquarter. 

6. EXPANSION 2025---Qianhao Industry

• 30,000 SM under roof. 
• Estimated time for operation: 2025. 

7. HISTORY
Since 1992

1992	Ningbo Yinzhou Longxing Machinery Manufacturing Factory was established. Mainly engaged in machining.
1999	Renovated investment casting production lines with precision casting production capacity 5,000 tons.
2001	Obtained ISO9001:2000 certificate..
2003	Products began to export.
2005	Ningbo Fenghua Huawei Investment Casting Co., Ltd was established.
2007	Cooperated with Bombardier, the first railway OEM customer abroad.
2008	Moved casting production line to Huawei with capacity 15,000 tons. Cooperated with Hyundai North America, the first automobile OEM customer abroad.
2009	Ningbo Qianhao Metal Product Co., Ltd was established for machining and import & export business.
2011	Obtained TS16949:2009&ISO14001:2004 certificate.
2012	Cooperated with Doosan in South Korea, the first construction equipment OEM customer abroad.
2013	Increased production capacity to 20,000 tons.
2014	Established ERP production management system and 5S management system.
2015-2018	Installed automatic and semi-automatic wax and shell making lines, pouring lines and more advanced environmental protection devices.
2020	Qianhao Metal Yunlong Facility Started Operation.
2022	Qianhao Machinery Started Operation.

8. STAFFING
Enterprise Spirit: Moving with the times, Pioneering and innovating, Harmony and win-win, Striving for excellence
Employee Image: Elegant style, Polite and courteous, Warmly and humble, Be neither arrogant nor inferior, Precise and professional. 

Casting Engineers	3
Material Engineers	2
Heat Treatment Engineers	1
Machining Engineer	5
Sheet Metal & Welding Engineer	3
Project Engineer	5
Professional Technician	11
QA	49
Production Management	19
Supply Chain Management	7
Management and Supervision	42
Sales &Customer Service Staff	16
Direct Labor	297
Total: 460

9. Annual Turnover
Expected Target: Up to 2025, annual turnover exceeds 70 million dollars

Annual turnover(Unit: Million Dollars)
2005	$ 7.4m
2006	$ 9.0m
2007	$ 12.6m
2008	$ 16.0m
2009	$ 10.7m
2010	$ 15.5m
2011	$ 18.4m
2012	$ 17.6m
2013	$ 26.9m
2014	$ 32.6m
2015	$ 34.1m
2016	$ 36.6m
2017	$40.1m
2018	$43.6m
2019	$44.7m
2020	$38.5m
2021	$56.7m
2022	$58.4m
2023	$59.6m

 

Casting

Our four casting processes is able to meet customer's wide range of needs for castings of different grades and qualities.

Covering different grades of
casting precision (CT6-8)
surface roughness (Ra6.4-25um)
weight range (0.1-500kgs)

10. LOST WAX CASTING PROCESS---ILLUSTRATION DIAGRAM

Process Design ⇒ Tooling Making ⇒ Wax Injection ⇒ Wax Pattern Assembly ⇒ Dipping ⇒ Stuccoing ⇒ Wax Removal  ⇒ Mold  Preheat
⇒ Casting  ⇒  Mold Shake out  ⇒Work Piece Cut-off ⇒ Grinding  ⇒ Heat Treatment ⇒ Machining  ⇒ Final Inspection ⇒ Pack& Transport 

11. LOST WAX CASTING - MANUFACTURING PROCESS 
 
12. LOST WAX CASTING - KEY CASTING EQUIPMENT

13. LOST WAX CASTING PROCESS TECHNOLOGY OVERVIEW

Casting Process	Lost Wax Casting (Investment Casting)
Material Range	carbon steel, alloy steel, stainless steel
Material standard	GB.ASTM. AISI. DIN. BS. JIS. EN. AS. AAR
Max Linear Size	1000mm; Max Diameter Size: 600 mm
Min Thickness	3mm
Casting Weight Range	0.10~80kgs
Casting Dimension Tolerance	CT6-CT8
Casting Surface Roughness	Ra6.4-12.5um
Industry Experience	rail, automobile & truck, construction & mining equipment, forklift, agricultural machinery, shipbuilding & marine, petroleum industry, construction, valve and pumps, electric motors, hardware, power equipment

14. LOST FOAM CASTING

Material Range	Carbon Steel, Alloy Steel, Stainless Steel
Max linear Size (W*C*H)	1500mm*800mm*750mm
Min thickness	6mm
Casting Weight Range	1-500kgs
Casting Dimension Tolerance	CT6-8
Casting Surface Roughness	Ra12.5um

15. SHELL MOULDING

Material Range	Carbon Steel, Alloy Steel
Max linear Size (W*C*H)	1200mm*800mm*650mm
Min thickness	6mm
Casting Weight Range	0.5-100kgs
Casting Dimension Tolerance	CT8
Casting Surface Roughness	Ra12.5-25um

16. CASTING PROFILE
 

1. Casting Marterial Profile	Alloy steel: 45% Carbon steel: 35% Stainless steel: 10% Iron: 10%
2. Casting Weight Profile	0.1-5kgs: 40% 5-20kgs: 30% 20-40kgs: 20% Above 40kgs: 10%
3. Business Share By Industries	Automobile : 35% Material Handling Equipment: 25% Construction Equipment: 20% Rail: 15% Agricultural Machinery: 10% Other industries:10%
4. Globa Market Share	United States: 30% Europe: 35% Japan& Korea: 15% Domestic market: 15% Other: 5%

 

Machining

 

Starting from machining  and dedicated to machining for 30 years, Longxing is matchless regardless of technology, equipment and capacity in the industry.

17. MACHINING SHOP PROCESS OVERVIEW


18. KEY MACHINING EQUPIMENT / MACHINE DETAIL



19. KEY MACHINING EQUPIMENT / MACHINE LIST

Horizontal Machining Center(4 Axis): 2	CNC Milling: 10
Vertical Machining Center(4 Axis) : 49	CNC Drilling: 5
Turn Center: 1	Drilling and Tapping Center: 7
CNC Lathe: 35	Milling Machine: 6
Turning Milling Center: 11	Drilling Machine: 5
Total 200+ Various Machining Equipment

20. MACHINING SPECIFICATION

Machining Material Range	arbon steel, alloy steel, stainless steel, cast iron, aluminum alloy, copper alloy
Main machines	four-axis horizontal machining center, four-axis vertical machining center, CNC milling machine, CNC lathe, turning and milling center, drilling and tapping center, CNC drilling machine, multi-station special machine
Machine Accuracy	positioning accuracy±0.004mm, repeatability±0.003mm
Maximum Cutting Diameter	φ1000mm
Maximum Machining Length	1800mm
Maximum Travel (x,y,z axis)	1800x850x700mm
Maximum Spindle Speed	12000 r/min
Maximum  Workpiece Weight	2500kgs
Machining Surface Roughness Range	Ra0.8 ~ 6.3um

21. SURFACE TREATMENTS

KTL(E-coating)	Wet Painting
Zinc Plating	Hot Galvanizing
Mirror Polishing	Powder Coating
Sand Blasting	Nickel Plating
Acid Pickling	Anti Rust Dip
Black Oxide

 

Other Production Capabilities

 

Cutting Plate & Sheet Metal, Welding

Longxing is committed to providing one-stop overall solution for OEM customers to manufacture metal components in casting related assembly unit such as cutting plate, sheet metal, welded parts and assembly parts . 

Longxing has developed into a metal parts manufacturer that produce customized components combined various kinds of manufacturing processes.

22. CUTTING PLATE & SHEET METAL

Laser Cutting Machine(Han's 8000w)	Sheet Size (length X width): 6500 X2500mm Sheet Thickness:≤25 mm
CNC Plasma Cutting Machine	Sheet Size(length X width): 9500 X4200mm Sheet Thickness:≤150mm
CNC Flame Cutting Machine	Sheet Size(length X width): 9500 X4200mm Sheet Thickness:≤250mm
Automated Shot Blast Machine	Sheet Size(length X width): 4000 X1200mm
CNC Bending Machine	Work Scope: ≤3200mm Sheet Thickness:≤12mm
Four Column Hydraulic Press Machine (YN32-650)	Work Scope: ≤820 X800mm Sheet Thickness:≤35mm
Crawler Deburring Machine

23. WELDING & ASSEMBLY

Welding Robot(YA1VAR61CJO)

Welding Robot(YA-1VAR61F00)

Welding Robot(YA-1VAR61F002)

Welding Robot(YA-1VAR61F00T)

Laser Welding Machine(W100B)

 

Quality Control

 

Quality is central to everything we do. 

It is our level of commitment to deliver a high quality product, ensured by a tight process control, that means we are able to repeatedly exceed our customers' expectations.

Every employee at Longxing is responsible for vigilantly watching over every step of our input and output processes.

Our products go through strict quality checks at every workstation to achieve maximum quality control for each manufacturing process. 

24. QUALITY CONTROL-CREDENTIALS 


25. TEST FACILITIES CAPABILITIES

1. Chemical analysis

2. Metallography

3. Tensile strength

4. Yield Strength

5. Elongation rate

6. Shrinkage rate

7. Impact test

8. Harness test

9. Dye Penetrant

10. Radiography (RT)

11.Magnetic Particle (MT)

12.Ultra-Sonic (UT) 

13.Surface Roughness Test

14.Microscopic Measurement

15.3D scanner

16.CMM

Total 60+ Various Inspection Equipment

26. KEY TEST FACILITIES
 

1. Direct-Reading Spectrometer	10.Microhardness Tester
2. Non-contact infrared thermometer	11.Surface Roughness Tester
3. Metallographic Microscope	12.Coating Thickness Meter
4. Tension Tester	13.Salt Spray Testing Machine
5. Low Temperature Chamber For Impact Specimen	14.Deep Penetration Microscope
6. Impact Test Machine	15. Video Measurement Machine
7. Magnetic Particle Testing Machine	19. 3D Scanner
8. Ultrasonic Testing Machine	20.Coordinate Measuring Machine
9.X-ray Tester

27. APQP and Inspection Report: 

APQP-Casting

1. Process Flow Diagrams
2. Control Plan
3. Process FMEA
4. Casting Process Instruction
5. Solidification Simulation Report
6. Heat Treatment Work Instruction
7. Casting Final Quality Control WI
8. Visual Inspection VI For Surface Irregularities

APQP-Machining

1. Process Flow Diagrams
2. Control Plan
3. Process FMEA
4. Machining Process Instruction
5. Gauge List And Validation Plan
6. Final Quality Control Work Instruction

Sheet Metal Welding Quality Management Documents

1. Process Flow Diagrams
2. Control Plan
3. Process FMEA
4. Operation Instruction for Welding
5. Operation Instruction for Cutting
6. Welding Penetration Report
7. Equipment Maintenance Plan and Guidance
8. Final Quality Control Work Instruction for Sheet Metal
9. Final Quality Control Work Instruction for Welding

Other Quality Document

1. PPAP Checklist
2. Measurement System Analysis Study
3. Process Capability Studies
4. Machine Capability Index
5. Overall Equipment Effectiveness
6. Corrective Action Report (8D)
7. Continuous Improvement Implementation Plan
8. Lean Manufacturing Continuous Improvement Plan
9. Packaging Instruction

Inspection Report

      1. Material Test Report
      2. Magnetic Particle Inspection Report
      3. Ultrasonic Examination Report
      4. Radiographic Test Report
      5. Destructive Test Report
      6. Coating Test Report
      7. Visual Inspection Report 
      8. Casting Inspection Report
      9. Dimensional Inspection Report
      10. CMM Report
  

 

Competitive Advantages

28. Competition Advantages: 

Advantages 1: High Engineering and Technical Capability 

1. Our industry top engineering technical team is with special skills and rich experience in product design, casting, heat treating and machining fields.. 
2. Based on customer needs, from the beginning of product development we offer casting solution to optimize product design, reduce costs and create best value for customers.
3. Special techniques enable us to be competent with key processes at Wax Injection & Shell Making when manufacturing parts with sophisticated inner structure.
4. Use casting simulation analysis system software to ensure 100% one-time success of PPAP sample..

Advantages 2:Advanced Inspection Equipment, Processes & Strong Quality Assurance Capability

1. Our full range testing equipment is leading in the industry to guarantee we continually provide only high-quality products for our customers.
2. Always follow ISO9001 and IATF16949 quality management system, implement 5S and Kanban site management to guarantee quality.
3. IQC, IPQC and FQC quality management team to control all production processes effectively to prevent occurrence  of  nonconforming product. 
4. Our casting PPM ≤6000,Machining PPM ≤50
5. We stick to the quality management philosophy: Starting from the customer needs and ending with their satisfaction and focusing on customer demands and exceeding their expectation.

Advantages3: Great Customer Service 

1. Our staffs are with abundant commercial experience, good language ability, and rich foundry and mechanical background to provide customers with superior service. We are committed to providing customers with accurate, careful and speedy service. 
2. Provide fast and effective feedback within 48 hours for Quotation, Quality Complaints and Emails.
3. Information-based management system is established and is driven by ERP and PMC system to ensure 95% on time delivery rate and aim for 99.9%.

Advantages 4: Powerful deep-processing capability is core competitive advantage that makes us 
different from others in the industry.

1. The machining facilities and foundry have independent management teams to maximize focus and skill sets.
2. We have transformed and upgraded to a process focused manufacturer with expanded manufacturing capabilities and is committed to being a one stop solution provider for top-end markets.
3. High technical expertise of precision machining castings and related cutting plate, sheet metal, welding and assembly capabilities is the best choice for you.