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Iron-based High Hardness MIM Parts

Name: China Customized Iron-based High Hardness MIM Parts Suppliers Factory
Brand: Zhongwei
SKU: 191024057

GH2036 is Fe-Cr-Ni-based precipitation hardening deformed superalloy, which mainly forms VC strengthening phase for precipitation hardening, and the service temperature is less than 650 ℃. The alloy has simple composition, good structure stability, good physical and mechanical properties at 600 ~ 650 ℃, and good machinability. It can be used to make aircraft jet engine turbine disk materials. The alloy has low cost and excellent comprehensive performance.

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Introduction of MIM Superalloy GH36 Parts

Iron-based high hardness MIM Parts
Item	Material	Production Process		Sintering Temperature		Mold	Custom
Superalloy	GH36	Metal Injection Molding		1550℃		To be customized	Yes
Chemical Composition	C: 0.34~.040 Mn: 7.5-9.5 Si: 0.30-0.80 Cr: 11.5~13.5 Mo: 1.10~1.40 Ni: 7.0~9.0 V: 1.25~1.55 P:≤0.035 S: ≤0.03 Nb: 0.25-0.50 Ti: ≤0.12 Te: surplus
Available Materials	Low carbon stainless steel, titanium alloy (Ti, TC4), copper alloy, tungsten alloy, cemented carbide, high temperature alloy (718, 713)
Finish	Dimensional Accuracy		Product Density		Appearance Treatment			Appropriate Weight
Roughness 1～5μm	（±0.1%～±0.5%）		92～95%		Mirror Reflection			0.03g～400g）

Mechanical properties

Variety	Heat treatment	Temperature0/℃	Tensile strength Eb/MPa≥	Elongation A/%≥	Section shrinkage Z/%≥
Hot rolled bar	Standard heat treatment		830	15	20
Disc forgings	Standard heat treatment		835	15	20

GH2036 Overview

Aviation GH2036 alloy is a kind of austenitic iron-based superalloy. Due to its high thermal strength and good corrosion resistance, it has a wide range of applications in the aviation industry, mainly used in aero-engine combustion chambers, turbine disks, Structural parts such as casings and shafts.

Effect of Solution Treatment on GH2036 Alloy

(1) There are mainly two types of carbides in the forged structure of GH2036 alloy: one is Cr-rich carbide, which is granular and dispersed in grains and grain boundaries; the other is Nb-rich, V-type carbide Carbide, the particles are larger and the shape is irregular.

(2) When the solution temperature increased to 1 200 ℃, the carbides in the alloy re-dissolved greatly. When the solution temperature increased to 1 220 ℃, all the carbides re-dissolved and the grain size was uniform. When the temperature is increased to 1 240 ℃, the grain size can reach ASTM2. 5 to 4. Level 5.

(3) The hardness of the alloy gradually decreases with the increase of the solution temperature, but when the solution treatment is performed at 1 160 to 1 200 ℃, the hardness of the alloy increases slightly with the increase of the treatment temperature, which is mainly caused by redissolving with carbides. related to the lattice distortion.

GH2036 Applications and Features

GH2036 alloy has been used in parts such as engine turbines, disks, bearing rings and fasteners; the alloy is also used in turbocharger turbine blades and other high-temperature parts of diesel engines and steam turbines.

GH2036 Heat Treatment System

1) Standard heat treatment system for forging round cakes and ring blanks: 1140℃ or 1130℃, 80min, water cooling + 650-670℃, 14-16h, then heat up to 770-780℃, 14-20h, air cooling.

2) Standard heat treatment system for hot rolled and forged bars: 1140°C+5°C, d<45mm for="" d="">45mm for 105min, running water cooling at +670°C, 12-14h, and then heated to 770-800°C, 12-14h, air cooling.

3) Standard heat treatment system for cold drawn bars: 1140℃+5℃, 80min, cooling with flowing water +670℃, 12-14h, then heated to 770-800℃, 10-12h, air cooling.

GH2036 Variety Specifications and Supply Status

We can supply various specifications of hot-rolled bars, cold-drawn bars, hot-forged bars, cakes, ring blanks and cold-drawn wires. Bars, cakes and ring blanks are delivered without heat treatment; cold drawn bars are delivered in solution state, solution + pickling or cold drawing; wire is cold drawn, solution + pickling or semi-hard The state is delivered in disc shape; the cold drawing material for cold heading is delivered in solid solution + pickling disc, solid solution + pickling straight strip, solid solution straight strip, or in cold drawn state.

GH2036 Metal Injection Molding Process

Using injection molding machine + vacuum sintering furnace and other processes.

GH2036 application overview and special requirements

GH3230 alloy is widely used in aero-engines for load-bearing components such as turbine disks and fasteners, and has been tested for a long time. The alloy has a higher coefficient of expansion, poorer oxidation and corrosion resistance, and has notch sensitivity at 600-650°C.

The research shows that the influence order of heat treatment factors on the hardness properties of GH2036 superalloy is: solution temperature > solution time > aging time > aging temperature, and the optimal process parameters are 960 ℃/60 min + water cooling + 560 ℃/2 h. In the orthogonal test, the hardness is up to 17.3% higher than the microhardness of the untreated sample. The solubility of carbides increases with the increase of solution temperature, and the macrohardness of the alloy decreases. Water cooling after solution treatment will make the second phase carbides dissolved in the austenite phase too late to precipitate, which increases the content of the second phase carbides in austenite, thereby increasing the hardness; More grain boundaries are generated, and greater external force is required to generate dislocation accumulation, thereby enhancing the hardness of the alloy. GH2036 was heat treated using the optimal heat treatment process, resulting in a 109% increase in fatigue life. The DIC nephogram shows that the fatigue crack basically does not expand before the ratio of loading cycles to fatigue life n/N=90.00%; when n/N is 99.49% to 99.82%, the strain concentration area appears and expands, and the fatigue crack expands; n After /N=99.82%, the crack propagation accelerates and leads to the final fracture of the specimen.

Our Service

Pre-sale

Evaluate according to drawings or products, calculate the price, and submit it to the buyer for confirmation

On sale

The production process of all products is supported by the production system and delivered according to the mutually agreed time. (If the size of the drawing needs to be changed in the middle, the buyer is responsible for the inconsistency with the original drawing. If we fail to meet customer requirements during the modification process, a full refund will be given)

After sales

After handing over the product, we will seal all the buyer's molds for safekeeping.

(Problem solving) If there is a second or third revision in the production process, we will reply within 1 hour at the earliest, and we will solve customer problems within 8 hours at the latest depending on the situation of products that need to be evaluated.

Why Choose US?

Our R&D team	Zhongwei Precision Co., Ltd. and Central South University have a R&D team of 10 people. They develop more than 400 products each year, which is more than 68% higher than the same industry, and have obtained more than 20 patent certificates.
Our technical team	Zhongwei Precision has 5 professional engineers in the field of metal injection molding, and 15 technicians responsible for workshop management.
Our philosophy on quality management	1. Focus on the customer Organizations depend on customers, so organizations should understand customers' current and future needs in order to meet customer requirements and exceed their expectations. 2. Leadership Organizers unify the purpose, direction and internal environment of the organization and create an environment in which employees can fully participate in the achievement of organizational goals. 80% of quality problems are related to management and 20% are related to employees. 3. Full participation Employees at all levels are the foundation of the organization's survival and development, and only with their full participation can they bring benefits to the organization. Job responsibilities include all staff (from general manager to grassroots staff). 4. Process Approach Manage related resources and activities as a process to achieve desired results more efficiently. Flowchart method. 5. A systematic approach to management Identifying, understanding, and managing a system of interrelated processes against set objectives contributes to the effectiveness and efficiency of an organization. The principle of the hoarding of the wooden bucket. 6. Continuous Improvement It is an eternal development goal of the organization. PDCA cycle. 7. A fact-based approach to decision-making: Logical analysis or judgment of data and information is the basis for effective decision-making. Speak with data and facts. 8. Mutually beneficial supplier relationships Enhance the ability of the organization and its suppliers to create value through mutually beneficial relationships.
Device resources	The company has 10 MIM production lines, CNC and intelligent automated production workshops for production lines, which can guarantee the production of millions of MIM parts per day.
System Certification	ISO9001, ISO14001, IATF16949 certification
Port	It is 200 kilometers away from Tianjin Port, and goods can arrive at the port within 24 hours.

Process After Sintering

1. Heat treatment: annealing, carbonization, tempering, quenching, normalizing, surface tempering

2. Processing equipment: CNC, WEDM, lathe, milling machine, drilling machine, grinder, etc.;

3. Surface treatment: anodizing, powder spraying, chrome plating, painting, sandblasting, nickel plating, galvanizing, blackening, polishing, bluing, etc.

Moulds and Inspection Fixtures

1. Mold service life: usually semi-permanent. (except for lost foam)

2. Mold delivery time: 10-25 days, (according to product structure and product size).

3. Tooling and mold maintenance: Zhongwei is responsible for precision parts.

Quality Control

1. Quality control: the defective rate is less than 0.1%.

2. Samples and trial run will be 100% inspected during production and before shipment, sample inspection for mass production according to ISDO standards or customer requirements.

3. Testing equipment: flaw detection, spectrum analyzer, golden image analyzer, three-coordinate measuring machine, hardness testing equipment, tensile testing machine.