News

Standard heat treatment solutions for high-quality metal castings.

We adopt silica sol precision casting to produce 4140 alloy steel, Q345 carbon steel and 304 stainless steel castings for construction machinery, mining, trailer, food & marine equipment. OEM customization available with full QC inspection and worldwide export to Europe & America.

This industry news elaborates the full differences between 304 and 316L stainless steel investment castings in chemical composition, corrosion resistance, machining performance, cost and applicable scenarios. It guides global purchasers to select proper steel grades according to working media like seawater, chemical liquid and fresh water, helping avoid premature corrosion failure and optimize full lifecycle cost performance for pump, valve, marine, food and machinery cast parts.

Upgraded intelligent eco production lines deliver high-precision OEM castings with full certifications for global equipment manufacturers.

The company has completed the full-process process optimization of silica sol precision casting. By upgrading core casting parameters and standardizing operation management, the casting yield, production efficiency and cost control performance have been greatly improved. The upgraded production line can manufacture high-precision special-shaped parts for new energy and rail transit industries, boosting the company’s high-end manufacturing competitiveness.

Over 130 investment casting enterprises showcased silica sol casting, 3D printed wax patterns and intelligent production lines at the 24th China International Foundry Expo. The industry shifts toward aerospace, medical and new energy high-end castings, stepping into micron-level precision manufacturing with simulation technology cutting product defects greatly.

Adopting both investment casting and sand casting technologies, the enterprise supplies castings to over 20 European and American countries for construction machinery, energy, shipbuilding and rail transit. Its one-stop dual-process solution cuts clients’ machining costs and boosts part interchangeability, driving growing repeat orders. The firm upgrades eco-friendly production lines and offers free process evaluation. Industry insiders believe manufacturers mastering both casting processes hold an upper hand in global high-end casting trade and help upgrade China’s casting industry to high-value production.

Weifang Junlong Machinery is fully occupied with overseas orders for forklift and petroleum precision castings. The whole production chain strictly follows silica sol investment casting technology. Technicians optimize casting processes to reduce defects. Strict quality inspection ensures high qualification rate, and all departments cooperate closely to guarantee on-time delivery for European and American customers.

Junlong Machinery upgraded the shell-making procedure of silica sol investment casting. By improving wax cluster structure, dipping and air-drying control, we reduced deformation and sand inclusion defects and greatly improved the product yield. We supply one-stop casting and machining services for global clients.

Weifang Junlong finished the technical upgrade of automatic intelligent shell-making line with robotic coating and constant temperature & humidity drying systems for digital process control, eliminating defects of complex castings in mass production. The renovation greatly lifts output and first-pass yield. Combined with heat treatment equipment and CAD/CAE simulation, we expand global high-end machinery component supply with intelligent manufacturing and diversified casting technologies.

Supported by full-process quality control system, our castings achieve over 98.5% first-pass yield with ISO9001 certification and repeated factory audits by European & American clients. We supply castings for construction machinery, oil & gas and marine equipment. Our professional R&D team solves typical casting defects and optimizes designs per drawings, offering one-stop OEM/ODM service from mold making, investment casting, CNC machining, surface finishing to export packaging.