How much is the most reasonable quenching hardness of beryllium bronze
Generally speaking, the hardness of beryllium bronze is not strictly specified, because after beryllium bronze solid solution and aging treatment, under normal circumstances, there will be slow precipitation of solidified phase for a long period of time, so we will find that beryllium bronze increases with time. The phenomenon that its hardness also increases with time. In addition, the elastic elements are either very thin or very thin, and it is difficult to measure the hardness, so most of them are controlled by process requirements. Below is some information for your reference.

Beryllium bronze heat treatment

Beryllium bronze is an extremely versatile precipitation hardening alloy. After solution and aging treatment, the strength can reach 1250-1500MPa (1250-1500kg). Its heat treatment features are: after solution treatment, it has good plasticity and can be deformed by cold working. However, after the aging treatment, it has an excellent elastic limit, and the hardness and strength are also improved.

(1) Solution treatment of beryllium bronze

Generally, the heating temperature of solution treatment is between 780-820 °C. For materials used as elastic elements, 760-780 °C is used, mainly to prevent the coarse grains from affecting the strength. The temperature uniformity of the solution treatment furnace should be strictly controlled within ±5℃. The holding time can generally be calculated as 1 hour/25mm. When the beryllium bronze is subjected to solution heating treatment in air or an oxidizing atmosphere, an oxide film will be formed on the surface. Although it has little effect on the mechanical properties after aging strengthening, it will affect the service life of the tool during cold working. In order to avoid oxidation, it should be heated in a vacuum furnace or ammonia decomposition, inert gas, reducing atmosphere (such as hydrogen, carbon monoxide, etc.), so as to obtain a bright heat treatment effect. In addition, attention should be paid to shortening the transfer time as much as possible (in this case of quenching), otherwise it will affect the mechanical properties after aging. Thin materials should not exceed 3 seconds, and general parts should not exceed 5 seconds. The quenching medium generally uses water (no heating requirements), of course, parts with complex shapes can also use oil to avoid deformation.

(2) Aging treatment of beryllium bronze

The aging temperature of beryllium bronze is related to the content of Be, and all alloys containing less than 2.1% of Be should be aged. For alloys with Be greater than 1.7%, the optimal aging temperature is 300-330 °C, and the holding time is 1-3 hours (depending on the shape and thickness of the part). High conductivity electrode alloys with Be less than 0.5%, due to the increase of melting point, the optimal aging temperature is 450-480 ℃, and the holding time is 1-3 hours. In recent years, double-stage and multi-stage aging have also been developed, that is, short-term aging at high temperature first, and then long-term thermal aging at low temperature. The advantage of this is that the performance is improved but the amount of deformation is reduced. In order to improve the dimensional accuracy of beryllium bronze after aging, clamp clamping can be used for aging, and sometimes two separate aging treatments can be used.

(3) Stress relief treatment of beryllium bronze

Beryllium bronze stress relief annealing temperature is 150-200 ℃, holding time is 1-1.5 hours, which can be used to eliminate residual stress caused by metal cutting, straightening, cold forming, etc., and stabilize the shape and dimensional accuracy of parts during long-term use .

Beryllium bronze needs to be heat treated to HRC 30 degrees. How should it be treated?
Beryllium Bronze

There are many grades, and the aging temperature is different. I am not a professional manufacturer of beryllium copper, and I am not familiar with it. I checked the manual.

1. The solution temperature of high-strength beryllium copper is 760-800℃, and the solution temperature of high-conductivity beryllium-copper is 900-955℃. The small and thin section is kept for 2 minutes, and the large section should not exceed 30 minutes. The heating speed is easy and fast. slow,

2. Then carry out quenching, the transfer time should be short, and the cooling speed should be as fast as possible to avoid the precipitation of strengthening phase and affect the subsequent aging strengthening treatment.

3. Aging treatment, the aging temperature of high-strength beryllium copper is 260-400 ℃, and the heat preservation is 10-240 minutes, and the aging temperature of high-conductivity beryllium copper is 425-565 ℃, and the holding time is 30-40 minutes; Over time, the former can be remedied, while the latter cannot be remedied. It is necessary to start over from the solid solution again.

The tempering you mentioned is softening above the aging temperature, right? Therefore, the original solid solution effect has been destroyed. I don’t know what the tempering temperature is. Then only start from solid solution again. The key is that you need to know the type of beryllium copper, the solid solution and aging process of different beryllium copper are still different, or consult the manufacturer of the material on how to accurately heat treatment.

How to heat treatment of leather bronze
Leather bronze? It should be beryllium bronze, right? The strengthening heat treatment of beryllium bronze is usually solution treatment + aging. Solution treatment varies according to the specific beryllium bronze and the specific technical requirements of the part. Under normal circumstances, heating at 800~830 degrees is used. If it is used as an elastic element, the heating temperature is 760~780. According to the effective thickness of the parts, the heating and holding time is also different. The specific problem is analyzed in detail, generally 8~25 minutes. The aging temperature is generally about 320. Similarly, the specific requirements vary according to the mechanical properties of the parts. The aging time is 1 to 2 hours for parts with hardness and wear resistance, and 2 to 3 hours for parts with elasticity. Hour.

The specific process needs to be adjusted according to the different parts of beryllium bronze, the shape and size of the parts, and the final mechanical properties requirements. In addition, the heating of beryllium bronze should use protective atmosphere or vacuum heat treatment. Commonly used protective atmospheres include steam, ammonia, hydrogen or charcoal, depending on the specific conditions of your site.
How is beryllium copper heat treated?
Beryllium copper is an extremely versatile precipitation hardening alloy. After solution and aging treatment, the strength can reach 1250-1500MPa. Its heat treatment features are: after solution treatment, it has good plasticity and can be deformed by cold working. However, after the aging treatment, it has an excellent elastic limit, and the hardness and strength are also improved.

The heat treatment of beryllium copper can be divided into annealing treatment, solution treatment and aging treatment after solution treatment.

The return (return) fire treatment is divided into:

(1) Intermediate softening annealing, which can be used as a softening process in the middle of processing.

(2) Stabilized tempering is used to eliminate the machining stress generated during precision springs and calibration, and stabilize the external dimensions.

(3) Stress relief tempering is used to eliminate the machining stress generated during machining and calibration.

Heat Treatment of Beryllium Bronze in Heat Treatment Technology
Beryllium bronze is an extremely versatile precipitation hardening alloy. After solution and aging treatment, the strength can reach 1250-1500MPa (1250-1500kg). Its heat treatment features are: after solution treatment, it has good plasticity and can be deformed by cold working. However, after the aging treatment, it has an excellent elastic limit, and the hardness and strength are also improved.

1. Solution treatment of beryllium bronze

Generally, the heating temperature of solution treatment is between 780-820 °C. For materials used as elastic components, 760-780 °C is used, mainly to prevent the coarse grains from affecting the strength. The temperature uniformity of the solution treatment furnace should be strictly controlled within ±5℃. The holding time can generally be calculated as 1 hour/25mm. When the beryllium bronze is subjected to solution heating treatment in air or an oxidizing atmosphere, an oxide film will be formed on the surface. Although it has little effect on the mechanical properties after aging strengthening, it will affect the service life of the tool during cold working. In order to avoid oxidation, it should be heated in a vacuum furnace or ammonia decomposition, inert gas, reducing atmosphere (such as hydrogen, carbon monoxide, etc.), so as to obtain a bright heat treatment effect. In addition, attention should be paid to shortening the transfer time as much as possible (in this case of quenching), otherwise it will affect the mechanical properties after aging. Thin materials should not exceed 3 seconds, and general parts should not exceed 5 seconds. The quenching medium generally uses water (no heating requirements), of course, parts with complex shapes can also use oil to avoid deformation.

2. Aging treatment of beryllium bronze

The aging temperature of beryllium bronze is related to the content of Be, and all alloys containing less than 2.1% of Be should be aged. For alloys with Be greater than 1.7%, the optimal aging temperature is 300-330 °C, and the holding time is 1-3 hours (depending on the shape and thickness of the part). High conductivity electrode alloys with Be less than 0.5%, due to the increase of melting point, the optimal aging temperature is 450-480 ℃, and the holding time is 1-3 hours. In recent years, double-stage and multi-stage aging have also been developed, that is, short-term aging at high temperature first, and then long-term thermal aging at low temperature. The advantage of this is that the performance is improved but the amount of deformation is reduced. In order to improve the dimensional accuracy of beryllium bronze after aging, clamp clamping can be used for aging, and sometimes two separate aging treatments can be used.

3. Stress relief treatment of beryllium bronze

Beryllium bronze stress relief annealing temperature is 150-200 ℃, holding time is 1-1.5 hours, which can be used to eliminate residual stress caused by metal cutting, straightening, cold forming, etc., and stabilize the shape and dimensional accuracy of parts during long-term use .